--- /dev/null
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * MGMTD Transactions
+ *
+ * Copyright (C) 2021 Vmware, Inc.
+ * Pushpasis Sarkar <spushpasis@vmware.com>
+ */
+
+#include <zebra.h>
+#include "hash.h"
+#include "jhash.h"
+#include "libfrr.h"
+#include "mgmtd/mgmt.h"
+#include "mgmtd/mgmt_memory.h"
+#include "mgmtd/mgmt_txn.h"
+
+#ifdef REDIRECT_DEBUG_TO_STDERR
+#define MGMTD_TXN_DBG(fmt, ...) \
+ fprintf(stderr, "%s: " fmt "\n", __func__, ##__VA_ARGS__)
+#define MGMTD_TXN_ERR(fmt, ...) \
+ fprintf(stderr, "%s: ERROR, " fmt "\n", __func__, ##__VA_ARGS__)
+#else /* REDIRECT_DEBUG_TO_STDERR */
+#define MGMTD_TXN_DBG(fmt, ...) \
+ do { \
+ if (mgmt_debug_txn) \
+ zlog_err("%s: " fmt, __func__, ##__VA_ARGS__); \
+ } while (0)
+#define MGMTD_TXN_ERR(fmt, ...) \
+ zlog_err("%s: ERROR: " fmt, __func__, ##__VA_ARGS__)
+#endif /* REDIRECT_DEBUG_TO_STDERR */
+
+#define MGMTD_TXN_LOCK(txn) mgmt_txn_lock(txn, __FILE__, __LINE__)
+#define MGMTD_TXN_UNLOCK(txn) mgmt_txn_unlock(txn, __FILE__, __LINE__)
+
+enum mgmt_txn_event {
+ MGMTD_TXN_PROC_SETCFG = 1,
+ MGMTD_TXN_PROC_COMMITCFG,
+ MGMTD_TXN_PROC_GETCFG,
+ MGMTD_TXN_PROC_GETDATA,
+ MGMTD_TXN_COMMITCFG_TIMEOUT,
+ MGMTD_TXN_CLEANUP
+};
+
+PREDECL_LIST(mgmt_txn_reqs);
+
+struct mgmt_set_cfg_req {
+ Mgmtd__DatastoreId ds_id;
+ struct mgmt_ds_ctx *ds_ctx;
+ struct nb_cfg_change cfg_changes[MGMTD_MAX_CFG_CHANGES_IN_BATCH];
+ uint16_t num_cfg_changes;
+ bool implicit_commit;
+ Mgmtd__DatastoreId dst_ds_id;
+ struct mgmt_ds_ctx *dst_ds_ctx;
+ struct mgmt_setcfg_stats *setcfg_stats;
+};
+
+enum mgmt_commit_phase {
+ MGMTD_COMMIT_PHASE_PREPARE_CFG = 0,
+ MGMTD_COMMIT_PHASE_TXN_CREATE,
+ MGMTD_COMMIT_PHASE_SEND_CFG,
+ MGMTD_COMMIT_PHASE_APPLY_CFG,
+ MGMTD_COMMIT_PHASE_TXN_DELETE,
+ MGMTD_COMMIT_PHASE_MAX
+};
+
+static inline const char *
+mgmt_commit_phase2str(enum mgmt_commit_phase cmt_phase)
+{
+ switch (cmt_phase) {
+ case MGMTD_COMMIT_PHASE_PREPARE_CFG:
+ return "PREP-CFG";
+ case MGMTD_COMMIT_PHASE_TXN_CREATE:
+ return "CREATE-TXN";
+ case MGMTD_COMMIT_PHASE_SEND_CFG:
+ return "SEND-CFG";
+ case MGMTD_COMMIT_PHASE_APPLY_CFG:
+ return "APPLY-CFG";
+ case MGMTD_COMMIT_PHASE_TXN_DELETE:
+ return "DELETE-TXN";
+ case MGMTD_COMMIT_PHASE_MAX:
+ return "Invalid/Unknown";
+ }
+
+ return "Invalid/Unknown";
+}
+
+PREDECL_LIST(mgmt_txn_batches);
+
+struct mgmt_txn_be_cfg_batch {
+ struct mgmt_txn_ctx *txn;
+ uint64_t batch_id;
+ enum mgmt_be_client_id be_id;
+ struct mgmt_be_client_adapter *be_adapter;
+ union mgmt_be_xpath_subscr_info
+ xp_subscr[MGMTD_MAX_CFG_CHANGES_IN_BATCH];
+ Mgmtd__YangCfgDataReq cfg_data[MGMTD_MAX_CFG_CHANGES_IN_BATCH];
+ Mgmtd__YangCfgDataReq * cfg_datap[MGMTD_MAX_CFG_CHANGES_IN_BATCH];
+ Mgmtd__YangData data[MGMTD_MAX_CFG_CHANGES_IN_BATCH];
+ Mgmtd__YangDataValue value[MGMTD_MAX_CFG_CHANGES_IN_BATCH];
+ size_t num_cfg_data;
+ int buf_space_left;
+ enum mgmt_commit_phase comm_phase;
+ struct mgmt_txn_batches_item list_linkage;
+};
+
+DECLARE_LIST(mgmt_txn_batches, struct mgmt_txn_be_cfg_batch, list_linkage);
+
+#define FOREACH_TXN_CFG_BATCH_IN_LIST(list, batch) \
+ frr_each_safe (mgmt_txn_batches, list, batch)
+
+struct mgmt_commit_cfg_req {
+ Mgmtd__DatastoreId src_ds_id;
+ struct mgmt_ds_ctx *src_ds_ctx;
+ Mgmtd__DatastoreId dst_ds_id;
+ struct mgmt_ds_ctx *dst_ds_ctx;
+ uint32_t nb_txn_id;
+ uint8_t validate_only : 1;
+ uint8_t abort : 1;
+ uint8_t implicit : 1;
+ uint8_t rollback : 1;
+
+ /* Track commit phases */
+ enum mgmt_commit_phase curr_phase;
+ enum mgmt_commit_phase next_phase;
+
+ /*
+ * Set of config changes to commit. This is used only
+ * when changes are NOT to be determined by comparing
+ * candidate and running DSs. This is typically used
+ * for downloading all relevant configs for a new backend
+ * client that has recently come up and connected with
+ * MGMTD.
+ */
+ struct nb_config_cbs *cfg_chgs;
+
+ /*
+ * Details on all the Backend Clients associated with
+ * this commit.
+ */
+ struct mgmt_be_client_subscr_info subscr_info;
+
+ /*
+ * List of backend batches for this commit to be validated
+ * and applied at the backend.
+ *
+ * FIXME: Need to re-think this design for the case set of
+ * validators for a given YANG data item is different from
+ * the set of notifiers for the same. We may need to have
+ * separate list of batches for VALIDATE and APPLY.
+ */
+ struct mgmt_txn_batches_head curr_batches[MGMTD_BE_CLIENT_ID_MAX];
+ struct mgmt_txn_batches_head next_batches[MGMTD_BE_CLIENT_ID_MAX];
+ /*
+ * The last batch added for any backend client. This is always on
+ * 'curr_batches'
+ */
+ struct mgmt_txn_be_cfg_batch
+ *last_be_cfg_batch[MGMTD_BE_CLIENT_ID_MAX];
+ struct hash *batches;
+ uint64_t next_batch_id;
+
+ struct mgmt_commit_stats *cmt_stats;
+};
+
+struct mgmt_get_data_reply {
+ /* Buffer space for preparing data reply */
+ int num_reply;
+ int last_batch;
+ Mgmtd__YangDataReply data_reply;
+ Mgmtd__YangData reply_data[MGMTD_MAX_NUM_DATA_REPLY_IN_BATCH];
+ Mgmtd__YangData * reply_datap[MGMTD_MAX_NUM_DATA_REPLY_IN_BATCH];
+ Mgmtd__YangDataValue reply_value[MGMTD_MAX_NUM_DATA_REPLY_IN_BATCH];
+ char *reply_xpathp[MGMTD_MAX_NUM_DATA_REPLY_IN_BATCH];
+};
+
+struct mgmt_get_data_req {
+ Mgmtd__DatastoreId ds_id;
+ struct mgmt_ds_ctx *ds_ctx;
+ char *xpaths[MGMTD_MAX_NUM_DATA_REQ_IN_BATCH];
+ int num_xpaths;
+
+ /*
+ * Buffer space for preparing reply.
+ * NOTE: Should only be malloc-ed on demand to reduce
+ * memory footprint. Freed up via mgmt_trx_req_free()
+ */
+ struct mgmt_get_data_reply *reply;
+
+ int total_reply;
+};
+
+struct mgmt_txn_req {
+ struct mgmt_txn_ctx *txn;
+ enum mgmt_txn_event req_event;
+ uint64_t req_id;
+ union {
+ struct mgmt_set_cfg_req *set_cfg;
+ struct mgmt_get_data_req *get_data;
+ struct mgmt_commit_cfg_req commit_cfg;
+ } req;
+
+ bool pending_be_proc;
+ struct mgmt_txn_reqs_item list_linkage;
+};
+
+DECLARE_LIST(mgmt_txn_reqs, struct mgmt_txn_req, list_linkage);
+
+#define FOREACH_TXN_REQ_IN_LIST(list, req) \
+ frr_each_safe (mgmt_txn_reqs, list, req)
+
+struct mgmt_txn_ctx {
+ uint64_t session_id; /* One transaction per client session */
+ uint64_t txn_id;
+ enum mgmt_txn_type type;
+
+ /* struct mgmt_master *mm; */
+
+ struct thread *proc_set_cfg;
+ struct thread *proc_comm_cfg;
+ struct thread *proc_get_cfg;
+ struct thread *proc_get_data;
+ struct thread *comm_cfg_timeout;
+ struct thread *clnup;
+
+ /* List of backend adapters involved in this transaction */
+ struct mgmt_txn_badapters_head be_adapters;
+
+ int refcount;
+
+ struct mgmt_txns_item list_linkage;
+
+ /*
+ * List of pending set-config requests for a given
+ * transaction/session. Just one list for requests
+ * not processed at all. There's no backend interaction
+ * involved.
+ */
+ struct mgmt_txn_reqs_head set_cfg_reqs;
+ /*
+ * List of pending get-config requests for a given
+ * transaction/session. Just one list for requests
+ * not processed at all. There's no backend interaction
+ * involved.
+ */
+ struct mgmt_txn_reqs_head get_cfg_reqs;
+ /*
+ * List of pending get-data requests for a given
+ * transaction/session Two lists, one for requests
+ * not processed at all, and one for requests that
+ * has been sent to backend for processing.
+ */
+ struct mgmt_txn_reqs_head get_data_reqs;
+ struct mgmt_txn_reqs_head pending_get_datas;
+ /*
+ * There will always be one commit-config allowed for a given
+ * transaction/session. No need to maintain lists for it.
+ */
+ struct mgmt_txn_req *commit_cfg_req;
+};
+
+DECLARE_LIST(mgmt_txns, struct mgmt_txn_ctx, list_linkage);
+
+#define FOREACH_TXN_IN_LIST(mm, txn) \
+ frr_each_safe (mgmt_txns, &(mm)->txn_list, (txn))
+
+static int mgmt_txn_send_commit_cfg_reply(struct mgmt_txn_ctx *txn,
+ enum mgmt_result result,
+ const char *error_if_any);
+
+static inline const char *
+mgmt_txn_commit_phase_str(struct mgmt_txn_ctx *txn, bool curr)
+{
+ if (!txn->commit_cfg_req)
+ return "None";
+
+ return (mgmt_commit_phase2str(
+ curr ? txn->commit_cfg_req->req.commit_cfg.curr_phase
+ : txn->commit_cfg_req->req.commit_cfg.next_phase));
+}
+
+static void mgmt_txn_lock(struct mgmt_txn_ctx *txn, const char *file,
+ int line);
+static void mgmt_txn_unlock(struct mgmt_txn_ctx **txn, const char *file,
+ int line);
+static int
+mgmt_txn_send_be_txn_delete(struct mgmt_txn_ctx *txn,
+ struct mgmt_be_client_adapter *adapter);
+
+static struct thread_master *mgmt_txn_tm;
+static struct mgmt_master *mgmt_txn_mm;
+
+static void mgmt_txn_register_event(struct mgmt_txn_ctx *txn,
+ enum mgmt_txn_event event);
+
+static int
+mgmt_move_be_commit_to_next_phase(struct mgmt_txn_ctx *txn,
+ struct mgmt_be_client_adapter *adapter);
+
+static struct mgmt_txn_be_cfg_batch *
+mgmt_txn_cfg_batch_alloc(struct mgmt_txn_ctx *txn,
+ enum mgmt_be_client_id id,
+ struct mgmt_be_client_adapter *be_adapter)
+{
+ struct mgmt_txn_be_cfg_batch *cfg_btch;
+
+ cfg_btch = XCALLOC(MTYPE_MGMTD_TXN_CFG_BATCH,
+ sizeof(struct mgmt_txn_be_cfg_batch));
+ assert(cfg_btch);
+ cfg_btch->be_id = id;
+
+ cfg_btch->txn = txn;
+ MGMTD_TXN_LOCK(txn);
+ assert(txn->commit_cfg_req);
+ mgmt_txn_batches_add_tail(
+ &txn->commit_cfg_req->req.commit_cfg.curr_batches[id],
+ cfg_btch);
+ cfg_btch->be_adapter = be_adapter;
+ cfg_btch->buf_space_left = MGMTD_BE_CFGDATA_MAX_MSG_LEN;
+ if (be_adapter)
+ mgmt_be_adapter_lock(be_adapter);
+
+ txn->commit_cfg_req->req.commit_cfg.last_be_cfg_batch[id] =
+ cfg_btch;
+ if (!txn->commit_cfg_req->req.commit_cfg.next_batch_id)
+ txn->commit_cfg_req->req.commit_cfg.next_batch_id++;
+ cfg_btch->batch_id =
+ txn->commit_cfg_req->req.commit_cfg.next_batch_id++;
+ hash_get(txn->commit_cfg_req->req.commit_cfg.batches, cfg_btch,
+ hash_alloc_intern);
+
+ return cfg_btch;
+}
+
+static void
+mgmt_txn_cfg_batch_free(struct mgmt_txn_be_cfg_batch **cfg_btch)
+{
+ size_t indx;
+ struct mgmt_commit_cfg_req *cmtcfg_req;
+
+ MGMTD_TXN_DBG(" Batch: %p, Txn: %p", *cfg_btch, (*cfg_btch)->txn);
+
+ assert((*cfg_btch)->txn
+ && (*cfg_btch)->txn->type == MGMTD_TXN_TYPE_CONFIG);
+
+ cmtcfg_req = &(*cfg_btch)->txn->commit_cfg_req->req.commit_cfg;
+ hash_release(cmtcfg_req->batches, *cfg_btch);
+ mgmt_txn_batches_del(&cmtcfg_req->curr_batches[(*cfg_btch)->be_id],
+ *cfg_btch);
+ mgmt_txn_batches_del(&cmtcfg_req->next_batches[(*cfg_btch)->be_id],
+ *cfg_btch);
+
+ if ((*cfg_btch)->be_adapter)
+ mgmt_be_adapter_unlock(&(*cfg_btch)->be_adapter);
+
+ for (indx = 0; indx < (*cfg_btch)->num_cfg_data; indx++) {
+ if ((*cfg_btch)->data[indx].xpath) {
+ free((*cfg_btch)->data[indx].xpath);
+ (*cfg_btch)->data[indx].xpath = NULL;
+ }
+ }
+
+ MGMTD_TXN_UNLOCK(&(*cfg_btch)->txn);
+
+ XFREE(MTYPE_MGMTD_TXN_CFG_BATCH, *cfg_btch);
+ *cfg_btch = NULL;
+}
+
+static unsigned int mgmt_txn_cfgbatch_hash_key(const void *data)
+{
+ const struct mgmt_txn_be_cfg_batch *batch = data;
+
+ return jhash2((uint32_t *) &batch->batch_id,
+ sizeof(batch->batch_id) / sizeof(uint32_t), 0);
+}
+
+static bool mgmt_txn_cfgbatch_hash_cmp(const void *d1, const void *d2)
+{
+ const struct mgmt_txn_be_cfg_batch *batch1 = d1;
+ const struct mgmt_txn_be_cfg_batch *batch2 = d2;
+
+ return (batch1->batch_id == batch2->batch_id);
+}
+
+static void mgmt_txn_cfgbatch_hash_free(void *data)
+{
+ struct mgmt_txn_be_cfg_batch *batch = data;
+
+ mgmt_txn_cfg_batch_free(&batch);
+}
+
+static inline struct mgmt_txn_be_cfg_batch *
+mgmt_txn_cfgbatch_id2ctx(struct mgmt_txn_ctx *txn, uint64_t batch_id)
+{
+ struct mgmt_txn_be_cfg_batch key = {0};
+ struct mgmt_txn_be_cfg_batch *batch;
+
+ if (!txn->commit_cfg_req)
+ return NULL;
+
+ key.batch_id = batch_id;
+ batch = hash_lookup(txn->commit_cfg_req->req.commit_cfg.batches,
+ &key);
+
+ return batch;
+}
+
+static void mgmt_txn_cleanup_be_cfg_batches(struct mgmt_txn_ctx *txn,
+ enum mgmt_be_client_id id)
+{
+ struct mgmt_txn_be_cfg_batch *cfg_btch;
+ struct mgmt_txn_batches_head *list;
+
+ list = &txn->commit_cfg_req->req.commit_cfg.curr_batches[id];
+ FOREACH_TXN_CFG_BATCH_IN_LIST (list, cfg_btch)
+ mgmt_txn_cfg_batch_free(&cfg_btch);
+
+ mgmt_txn_batches_fini(list);
+
+ list = &txn->commit_cfg_req->req.commit_cfg.next_batches[id];
+ FOREACH_TXN_CFG_BATCH_IN_LIST (list, cfg_btch)
+ mgmt_txn_cfg_batch_free(&cfg_btch);
+
+ mgmt_txn_batches_fini(list);
+
+ txn->commit_cfg_req->req.commit_cfg.last_be_cfg_batch[id] = NULL;
+}
+
+static struct mgmt_txn_req *mgmt_txn_req_alloc(struct mgmt_txn_ctx *txn,
+ uint64_t req_id,
+ enum mgmt_txn_event req_event)
+{
+ struct mgmt_txn_req *txn_req;
+ enum mgmt_be_client_id id;
+
+ txn_req = XCALLOC(MTYPE_MGMTD_TXN_REQ, sizeof(struct mgmt_txn_req));
+ assert(txn_req);
+ txn_req->txn = txn;
+ txn_req->req_id = req_id;
+ txn_req->req_event = req_event;
+ txn_req->pending_be_proc = false;
+
+ switch (txn_req->req_event) {
+ case MGMTD_TXN_PROC_SETCFG:
+ txn_req->req.set_cfg = XCALLOC(MTYPE_MGMTD_TXN_SETCFG_REQ,
+ sizeof(struct mgmt_set_cfg_req));
+ assert(txn_req->req.set_cfg);
+ mgmt_txn_reqs_add_tail(&txn->set_cfg_reqs, txn_req);
+ MGMTD_TXN_DBG(
+ "Added a new SETCFG Req: %p for Txn: %p, Sessn: 0x%llx",
+ txn_req, txn, (unsigned long long)txn->session_id);
+ break;
+ case MGMTD_TXN_PROC_COMMITCFG:
+ txn->commit_cfg_req = txn_req;
+ MGMTD_TXN_DBG(
+ "Added a new COMMITCFG Req: %p for Txn: %p, Sessn: 0x%llx",
+ txn_req, txn, (unsigned long long)txn->session_id);
+
+ FOREACH_MGMTD_BE_CLIENT_ID (id) {
+ mgmt_txn_batches_init(
+ &txn_req->req.commit_cfg.curr_batches[id]);
+ mgmt_txn_batches_init(
+ &txn_req->req.commit_cfg.next_batches[id]);
+ }
+
+ txn_req->req.commit_cfg.batches =
+ hash_create(mgmt_txn_cfgbatch_hash_key,
+ mgmt_txn_cfgbatch_hash_cmp,
+ "MGMT Config Batches");
+ break;
+ case MGMTD_TXN_PROC_GETCFG:
+ txn_req->req.get_data =
+ XCALLOC(MTYPE_MGMTD_TXN_GETDATA_REQ,
+ sizeof(struct mgmt_get_data_req));
+ assert(txn_req->req.get_data);
+ mgmt_txn_reqs_add_tail(&txn->get_cfg_reqs, txn_req);
+ MGMTD_TXN_DBG(
+ "Added a new GETCFG Req: %p for Txn: %p, Sessn: 0x%llx",
+ txn_req, txn, (unsigned long long)txn->session_id);
+ break;
+ case MGMTD_TXN_PROC_GETDATA:
+ txn_req->req.get_data =
+ XCALLOC(MTYPE_MGMTD_TXN_GETDATA_REQ,
+ sizeof(struct mgmt_get_data_req));
+ assert(txn_req->req.get_data);
+ mgmt_txn_reqs_add_tail(&txn->get_data_reqs, txn_req);
+ MGMTD_TXN_DBG(
+ "Added a new GETDATA Req: %p for Txn: %p, Sessn: 0x%llx",
+ txn_req, txn, (unsigned long long)txn->session_id);
+ break;
+ case MGMTD_TXN_COMMITCFG_TIMEOUT:
+ case MGMTD_TXN_CLEANUP:
+ break;
+ }
+
+ MGMTD_TXN_LOCK(txn);
+
+ return txn_req;
+}
+
+static void mgmt_txn_req_free(struct mgmt_txn_req **txn_req)
+{
+ int indx;
+ struct mgmt_txn_reqs_head *req_list = NULL;
+ struct mgmt_txn_reqs_head *pending_list = NULL;
+ enum mgmt_be_client_id id;
+ struct mgmt_be_client_adapter *adapter;
+
+ switch ((*txn_req)->req_event) {
+ case MGMTD_TXN_PROC_SETCFG:
+ for (indx = 0; indx < (*txn_req)->req.set_cfg->num_cfg_changes;
+ indx++) {
+ if ((*txn_req)->req.set_cfg->cfg_changes[indx].value) {
+ MGMTD_TXN_DBG(
+ "Freeing value for %s at %p ==> '%s'",
+ (*txn_req)
+ ->req.set_cfg->cfg_changes[indx]
+ .xpath,
+ (*txn_req)
+ ->req.set_cfg->cfg_changes[indx]
+ .value,
+ (*txn_req)
+ ->req.set_cfg->cfg_changes[indx]
+ .value);
+ free((void *)(*txn_req)
+ ->req.set_cfg->cfg_changes[indx]
+ .value);
+ }
+ }
+ req_list = &(*txn_req)->txn->set_cfg_reqs;
+ MGMTD_TXN_DBG("Deleting SETCFG Req: %p for Txn: %p",
+ *txn_req, (*txn_req)->txn);
+ XFREE(MTYPE_MGMTD_TXN_SETCFG_REQ, (*txn_req)->req.set_cfg);
+ break;
+ case MGMTD_TXN_PROC_COMMITCFG:
+ MGMTD_TXN_DBG("Deleting COMMITCFG Req: %p for Txn: %p",
+ *txn_req, (*txn_req)->txn);
+ FOREACH_MGMTD_BE_CLIENT_ID (id) {
+ /*
+ * Send TXN_DELETE to cleanup state for this
+ * transaction on backend
+ */
+ if ((*txn_req)->req.commit_cfg.curr_phase
+ >= MGMTD_COMMIT_PHASE_TXN_CREATE
+ && (*txn_req)->req.commit_cfg.curr_phase
+ < MGMTD_COMMIT_PHASE_TXN_DELETE
+ && (*txn_req)
+ ->req.commit_cfg.subscr_info
+ .xpath_subscr[id]
+ .subscribed) {
+ adapter = mgmt_be_get_adapter_by_id(id);
+ if (adapter)
+ mgmt_txn_send_be_txn_delete(
+ (*txn_req)->txn, adapter);
+ }
+
+ mgmt_txn_cleanup_be_cfg_batches((*txn_req)->txn,
+ id);
+ if ((*txn_req)->req.commit_cfg.batches) {
+ hash_clean((*txn_req)->req.commit_cfg.batches,
+ mgmt_txn_cfgbatch_hash_free);
+ hash_free((*txn_req)->req.commit_cfg.batches);
+ (*txn_req)->req.commit_cfg.batches = NULL;
+ }
+ }
+ break;
+ case MGMTD_TXN_PROC_GETCFG:
+ for (indx = 0; indx < (*txn_req)->req.get_data->num_xpaths;
+ indx++) {
+ if ((*txn_req)->req.get_data->xpaths[indx])
+ free((void *)(*txn_req)
+ ->req.get_data->xpaths[indx]);
+ }
+ req_list = &(*txn_req)->txn->get_cfg_reqs;
+ MGMTD_TXN_DBG("Deleting GETCFG Req: %p for Txn: %p",
+ *txn_req, (*txn_req)->txn);
+ if ((*txn_req)->req.get_data->reply)
+ XFREE(MTYPE_MGMTD_TXN_GETDATA_REPLY,
+ (*txn_req)->req.get_data->reply);
+ XFREE(MTYPE_MGMTD_TXN_GETDATA_REQ, (*txn_req)->req.get_data);
+ break;
+ case MGMTD_TXN_PROC_GETDATA:
+ for (indx = 0; indx < (*txn_req)->req.get_data->num_xpaths;
+ indx++) {
+ if ((*txn_req)->req.get_data->xpaths[indx])
+ free((void *)(*txn_req)
+ ->req.get_data->xpaths[indx]);
+ }
+ pending_list = &(*txn_req)->txn->pending_get_datas;
+ req_list = &(*txn_req)->txn->get_data_reqs;
+ MGMTD_TXN_DBG("Deleting GETDATA Req: %p for Txn: %p",
+ *txn_req, (*txn_req)->txn);
+ if ((*txn_req)->req.get_data->reply)
+ XFREE(MTYPE_MGMTD_TXN_GETDATA_REPLY,
+ (*txn_req)->req.get_data->reply);
+ XFREE(MTYPE_MGMTD_TXN_GETDATA_REQ, (*txn_req)->req.get_data);
+ break;
+ case MGMTD_TXN_COMMITCFG_TIMEOUT:
+ case MGMTD_TXN_CLEANUP:
+ break;
+ }
+
+ if ((*txn_req)->pending_be_proc && pending_list) {
+ mgmt_txn_reqs_del(pending_list, *txn_req);
+ MGMTD_TXN_DBG("Removed Req: %p from pending-list (left:%d)",
+ *txn_req, (int)mgmt_txn_reqs_count(pending_list));
+ } else if (req_list) {
+ mgmt_txn_reqs_del(req_list, *txn_req);
+ MGMTD_TXN_DBG("Removed Req: %p from request-list (left:%d)",
+ *txn_req, (int)mgmt_txn_reqs_count(req_list));
+ }
+
+ (*txn_req)->pending_be_proc = false;
+ MGMTD_TXN_UNLOCK(&(*txn_req)->txn);
+ XFREE(MTYPE_MGMTD_TXN_REQ, (*txn_req));
+ *txn_req = NULL;
+}
+
+static void mgmt_txn_process_set_cfg(struct thread *thread)
+{
+ struct mgmt_txn_ctx *txn;
+ struct mgmt_txn_req *txn_req;
+ struct mgmt_ds_ctx *ds_ctx;
+ struct nb_config *nb_config;
+ char err_buf[1024];
+ bool error;
+ int num_processed = 0;
+ size_t left;
+ struct mgmt_commit_stats *cmt_stats;
+ int ret = 0;
+
+ txn = (struct mgmt_txn_ctx *)THREAD_ARG(thread);
+ assert(txn);
+ cmt_stats = mgmt_fe_get_session_commit_stats(txn->session_id);
+
+ MGMTD_TXN_DBG(
+ "Processing %d SET_CONFIG requests for Txn:%p Session:0x%llx",
+ (int)mgmt_txn_reqs_count(&txn->set_cfg_reqs), txn,
+ (unsigned long long)txn->session_id);
+
+ FOREACH_TXN_REQ_IN_LIST (&txn->set_cfg_reqs, txn_req) {
+ error = false;
+ assert(txn_req->req_event == MGMTD_TXN_PROC_SETCFG);
+ ds_ctx = txn_req->req.set_cfg->ds_ctx;
+ if (!ds_ctx) {
+ mgmt_fe_send_set_cfg_reply(
+ txn->session_id, txn->txn_id,
+ txn_req->req.set_cfg->ds_id, txn_req->req_id,
+ MGMTD_INTERNAL_ERROR, "No such datastore!",
+ txn_req->req.set_cfg->implicit_commit);
+ error = true;
+ goto mgmt_txn_process_set_cfg_done;
+ }
+
+ nb_config = mgmt_ds_get_nb_config(ds_ctx);
+ if (!nb_config) {
+ mgmt_fe_send_set_cfg_reply(
+ txn->session_id, txn->txn_id,
+ txn_req->req.set_cfg->ds_id, txn_req->req_id,
+ MGMTD_INTERNAL_ERROR,
+ "Unable to retrieve DS Config Tree!",
+ txn_req->req.set_cfg->implicit_commit);
+ error = true;
+ goto mgmt_txn_process_set_cfg_done;
+ }
+
+ error = false;
+ nb_candidate_edit_config_changes(
+ nb_config, txn_req->req.set_cfg->cfg_changes,
+ (size_t)txn_req->req.set_cfg->num_cfg_changes, NULL,
+ NULL, 0, err_buf, sizeof(err_buf), &error);
+ if (error) {
+ mgmt_fe_send_set_cfg_reply(
+ txn->session_id, txn->txn_id,
+ txn_req->req.set_cfg->ds_id, txn_req->req_id,
+ MGMTD_INTERNAL_ERROR, err_buf,
+ txn_req->req.set_cfg->implicit_commit);
+ goto mgmt_txn_process_set_cfg_done;
+ }
+
+ if (txn_req->req.set_cfg->implicit_commit) {
+ assert(mgmt_txn_reqs_count(&txn->set_cfg_reqs) == 1);
+ assert(txn_req->req.set_cfg->dst_ds_ctx);
+
+ ret = mgmt_ds_write_lock(
+ txn_req->req.set_cfg->dst_ds_ctx);
+ if (ret != 0) {
+ MGMTD_TXN_ERR(
+ "Failed to lock the DS %u for txn: %p session 0x%llx, errstr %s!",
+ txn_req->req.set_cfg->dst_ds_id, txn,
+ (unsigned long long)txn->session_id,
+ strerror(ret));
+ mgmt_txn_send_commit_cfg_reply(
+ txn, MGMTD_DS_LOCK_FAILED,
+ "Lock running DS before implicit commit failed!");
+ goto mgmt_txn_process_set_cfg_done;
+ }
+
+ mgmt_txn_send_commit_config_req(
+ txn->txn_id, txn_req->req_id,
+ txn_req->req.set_cfg->ds_id,
+ txn_req->req.set_cfg->ds_ctx,
+ txn_req->req.set_cfg->dst_ds_id,
+ txn_req->req.set_cfg->dst_ds_ctx, false,
+ false, true);
+
+ if (mm->perf_stats_en)
+ gettimeofday(&cmt_stats->last_start, NULL);
+ cmt_stats->commit_cnt++;
+ } else if (mgmt_fe_send_set_cfg_reply(
+ txn->session_id, txn->txn_id,
+ txn_req->req.set_cfg->ds_id,
+ txn_req->req_id, MGMTD_SUCCESS, NULL, false)
+ != 0) {
+ MGMTD_TXN_ERR(
+ "Failed to send SET_CONFIG_REPLY for txn %p session 0x%llx",
+ txn, (unsigned long long)txn->session_id);
+ error = true;
+ }
+
+ mgmt_txn_process_set_cfg_done:
+
+ /*
+ * Note: The following will remove it from the list as well.
+ */
+ mgmt_txn_req_free(&txn_req);
+
+ num_processed++;
+ if (num_processed == MGMTD_TXN_MAX_NUM_SETCFG_PROC)
+ break;
+ }
+
+ left = mgmt_txn_reqs_count(&txn->set_cfg_reqs);
+ if (left) {
+ MGMTD_TXN_DBG(
+ "Processed maximum number of Set-Config requests (%d/%d/%d). Rescheduling for rest.",
+ num_processed, MGMTD_TXN_MAX_NUM_SETCFG_PROC,
+ (int)left);
+ mgmt_txn_register_event(txn, MGMTD_TXN_PROC_SETCFG);
+ }
+}
+
+static int mgmt_txn_send_commit_cfg_reply(struct mgmt_txn_ctx *txn,
+ enum mgmt_result result,
+ const char *error_if_any)
+{
+ int ret = 0;
+ bool success, create_cmt_info_rec;
+
+ if (!txn->commit_cfg_req)
+ return -1;
+
+ success = (result == MGMTD_SUCCESS || result == MGMTD_NO_CFG_CHANGES);
+
+ if (!txn->commit_cfg_req->req.commit_cfg.implicit && txn->session_id
+ && mgmt_fe_send_commit_cfg_reply(
+ txn->session_id, txn->txn_id,
+ txn->commit_cfg_req->req.commit_cfg.src_ds_id,
+ txn->commit_cfg_req->req.commit_cfg.dst_ds_id,
+ txn->commit_cfg_req->req_id,
+ txn->commit_cfg_req->req.commit_cfg.validate_only,
+ result, error_if_any)
+ != 0) {
+ MGMTD_TXN_ERR(
+ "Failed to send COMMIT-CONFIG-REPLY for Txn %p Sessn 0x%llx",
+ txn, (unsigned long long)txn->session_id);
+ }
+
+ if (txn->commit_cfg_req->req.commit_cfg.implicit && txn->session_id
+ && mgmt_fe_send_set_cfg_reply(
+ txn->session_id, txn->txn_id,
+ txn->commit_cfg_req->req.commit_cfg.src_ds_id,
+ txn->commit_cfg_req->req_id,
+ success ? MGMTD_SUCCESS : MGMTD_INTERNAL_ERROR,
+ error_if_any, true)
+ != 0) {
+ MGMTD_TXN_ERR(
+ "Failed to send SET-CONFIG-REPLY for Txn %p Sessn 0x%llx",
+ txn, (unsigned long long)txn->session_id);
+ }
+
+ if (success) {
+ /* Stop the commit-timeout timer */
+ THREAD_OFF(txn->comm_cfg_timeout);
+
+ create_cmt_info_rec =
+ (result != MGMTD_NO_CFG_CHANGES &&
+ !txn->commit_cfg_req->req.commit_cfg.rollback);
+
+ /*
+ * Successful commit: Merge Src DS into Dst DS if and only if
+ * this was not a validate-only or abort request.
+ */
+ if ((txn->session_id
+ && !txn->commit_cfg_req->req.commit_cfg.validate_only
+ && !txn->commit_cfg_req->req.commit_cfg.abort)
+ || txn->commit_cfg_req->req.commit_cfg.rollback) {
+ mgmt_ds_copy_dss(txn->commit_cfg_req->req.commit_cfg
+ .src_ds_ctx,
+ txn->commit_cfg_req->req.commit_cfg
+ .dst_ds_ctx,
+ create_cmt_info_rec);
+ }
+
+ /*
+ * Restore Src DS back to Dest DS only through a commit abort
+ * request.
+ */
+ if (txn->session_id
+ && txn->commit_cfg_req->req.commit_cfg.abort)
+ mgmt_ds_copy_dss(txn->commit_cfg_req->req.commit_cfg
+ .dst_ds_ctx,
+ txn->commit_cfg_req->req.commit_cfg
+ .src_ds_ctx,
+ false);
+ } else {
+ /*
+ * The commit has failied. For implicit commit requests restore
+ * back the contents of the candidate DS.
+ */
+ if (txn->commit_cfg_req->req.commit_cfg.implicit)
+ mgmt_ds_copy_dss(txn->commit_cfg_req->req.commit_cfg
+ .dst_ds_ctx,
+ txn->commit_cfg_req->req.commit_cfg
+ .src_ds_ctx,
+ false);
+ }
+
+ if (txn->commit_cfg_req->req.commit_cfg.rollback) {
+ ret = mgmt_ds_unlock(
+ txn->commit_cfg_req->req.commit_cfg.dst_ds_ctx);
+ if (ret != 0)
+ MGMTD_TXN_ERR(
+ "Failed to unlock the dst DS during rollback : %s",
+ strerror(ret));
+ }
+
+ if (txn->commit_cfg_req->req.commit_cfg.implicit)
+ if (mgmt_ds_unlock(
+ txn->commit_cfg_req->req.commit_cfg.dst_ds_ctx)
+ != 0)
+ MGMTD_TXN_ERR(
+ "Failed to unlock the dst DS during implicit : %s",
+ strerror(ret));
+
+ txn->commit_cfg_req->req.commit_cfg.cmt_stats = NULL;
+ mgmt_txn_req_free(&txn->commit_cfg_req);
+
+ /*
+ * The CONFIG Transaction should be destroyed from Frontend-adapter.
+ * But in case the transaction is not triggered from a front-end session
+ * we need to cleanup by itself.
+ */
+ if (!txn->session_id)
+ mgmt_txn_register_event(txn, MGMTD_TXN_CLEANUP);
+
+ return 0;
+}
+
+static void
+mgmt_move_txn_cfg_batch_to_next(struct mgmt_commit_cfg_req *cmtcfg_req,
+ struct mgmt_txn_be_cfg_batch *cfg_btch,
+ struct mgmt_txn_batches_head *src_list,
+ struct mgmt_txn_batches_head *dst_list,
+ bool update_commit_phase,
+ enum mgmt_commit_phase to_phase)
+{
+ mgmt_txn_batches_del(src_list, cfg_btch);
+
+ if (update_commit_phase) {
+ MGMTD_TXN_DBG("Move Txn-Id %p Batch-Id %p from '%s' --> '%s'",
+ cfg_btch->txn, cfg_btch,
+ mgmt_commit_phase2str(cfg_btch->comm_phase),
+ mgmt_txn_commit_phase_str(cfg_btch->txn, false));
+ cfg_btch->comm_phase = to_phase;
+ }
+
+ mgmt_txn_batches_add_tail(dst_list, cfg_btch);
+}
+
+static void mgmt_move_txn_cfg_batches(struct mgmt_txn_ctx *txn,
+ struct mgmt_commit_cfg_req *cmtcfg_req,
+ struct mgmt_txn_batches_head *src_list,
+ struct mgmt_txn_batches_head *dst_list,
+ bool update_commit_phase,
+ enum mgmt_commit_phase to_phase)
+{
+ struct mgmt_txn_be_cfg_batch *cfg_btch;
+
+ FOREACH_TXN_CFG_BATCH_IN_LIST (src_list, cfg_btch) {
+ mgmt_move_txn_cfg_batch_to_next(cmtcfg_req, cfg_btch, src_list,
+ dst_list, update_commit_phase,
+ to_phase);
+ }
+}
+
+static int
+mgmt_try_move_commit_to_next_phase(struct mgmt_txn_ctx *txn,
+ struct mgmt_commit_cfg_req *cmtcfg_req)
+{
+ struct mgmt_txn_batches_head *curr_list, *next_list;
+ enum mgmt_be_client_id id;
+
+ MGMTD_TXN_DBG("Txn-Id %p, Phase(current:'%s' next:'%s')", txn,
+ mgmt_txn_commit_phase_str(txn, true),
+ mgmt_txn_commit_phase_str(txn, false));
+
+ /*
+ * Check if all clients has moved to next phase or not.
+ */
+ FOREACH_MGMTD_BE_CLIENT_ID (id) {
+ if (cmtcfg_req->subscr_info.xpath_subscr[id].subscribed &&
+ mgmt_txn_batches_count(&cmtcfg_req->curr_batches[id])) {
+ /*
+ * There's atleast once client who hasn't moved to
+ * next phase.
+ *
+ * TODO: Need to re-think this design for the case
+ * set of validators for a given YANG data item is
+ * different from the set of notifiers for the same.
+ */
+ return -1;
+ }
+ }
+
+ MGMTD_TXN_DBG("Move entire Txn-Id %p from '%s' to '%s'", txn,
+ mgmt_txn_commit_phase_str(txn, true),
+ mgmt_txn_commit_phase_str(txn, false));
+
+ /*
+ * If we are here, it means all the clients has moved to next phase.
+ * So we can move the whole commit to next phase.
+ */
+ cmtcfg_req->curr_phase = cmtcfg_req->next_phase;
+ cmtcfg_req->next_phase++;
+ MGMTD_TXN_DBG(
+ "Move back all config batches for Txn %p from next to current branch",
+ txn);
+ FOREACH_MGMTD_BE_CLIENT_ID (id) {
+ curr_list = &cmtcfg_req->curr_batches[id];
+ next_list = &cmtcfg_req->next_batches[id];
+ mgmt_move_txn_cfg_batches(txn, cmtcfg_req, next_list,
+ curr_list, false, 0);
+ }
+
+ mgmt_txn_register_event(txn, MGMTD_TXN_PROC_COMMITCFG);
+
+ return 0;
+}
+
+static int
+mgmt_move_be_commit_to_next_phase(struct mgmt_txn_ctx *txn,
+ struct mgmt_be_client_adapter *adapter)
+{
+ struct mgmt_commit_cfg_req *cmtcfg_req;
+ struct mgmt_txn_batches_head *curr_list, *next_list;
+
+ if (txn->type != MGMTD_TXN_TYPE_CONFIG || !txn->commit_cfg_req)
+ return -1;
+
+ cmtcfg_req = &txn->commit_cfg_req->req.commit_cfg;
+
+ MGMTD_TXN_DBG(
+ "Move Txn-Id %p for '%s' Phase(current: '%s' next:'%s')", txn,
+ adapter->name, mgmt_txn_commit_phase_str(txn, true),
+ mgmt_txn_commit_phase_str(txn, false));
+
+ MGMTD_TXN_DBG(
+ "Move all config batches for '%s' from current to next list",
+ adapter->name);
+ curr_list = &cmtcfg_req->curr_batches[adapter->id];
+ next_list = &cmtcfg_req->next_batches[adapter->id];
+ mgmt_move_txn_cfg_batches(txn, cmtcfg_req, curr_list, next_list, true,
+ cmtcfg_req->next_phase);
+
+ MGMTD_TXN_DBG("Txn-Id %p, Phase(current:'%s' next:'%s')", txn,
+ mgmt_txn_commit_phase_str(txn, true),
+ mgmt_txn_commit_phase_str(txn, false));
+
+ /*
+ * Check if all clients has moved to next phase or not.
+ */
+ mgmt_try_move_commit_to_next_phase(txn, cmtcfg_req);
+
+ return 0;
+}
+
+static int mgmt_txn_create_config_batches(struct mgmt_txn_req *txn_req,
+ struct nb_config_cbs *changes)
+{
+ struct nb_config_cb *cb, *nxt;
+ struct nb_config_change *chg;
+ struct mgmt_txn_be_cfg_batch *cfg_btch;
+ struct mgmt_be_client_subscr_info subscr_info;
+ char *xpath = NULL, *value = NULL;
+ char err_buf[1024];
+ enum mgmt_be_client_id id;
+ struct mgmt_be_client_adapter *adapter;
+ struct mgmt_commit_cfg_req *cmtcfg_req;
+ bool found_validator;
+ int num_chgs = 0;
+ int xpath_len, value_len;
+
+ cmtcfg_req = &txn_req->req.commit_cfg;
+
+ RB_FOREACH_SAFE (cb, nb_config_cbs, changes, nxt) {
+ chg = (struct nb_config_change *)cb;
+
+ /*
+ * Could have directly pointed to xpath in nb_node.
+ * But dont want to mess with it now.
+ * xpath = chg->cb.nb_node->xpath;
+ */
+ xpath = lyd_path(chg->cb.dnode, LYD_PATH_STD, NULL, 0);
+ if (!xpath) {
+ (void)mgmt_txn_send_commit_cfg_reply(
+ txn_req->txn, MGMTD_INTERNAL_ERROR,
+ "Internal error! Could not get Xpath from Ds node!");
+ goto mgmt_txn_create_config_batches_failed;
+ }
+
+ value = (char *)lyd_get_value(chg->cb.dnode);
+ if (!value)
+ value = (char *)MGMTD_BE_CONTAINER_NODE_VAL;
+
+ MGMTD_TXN_DBG("XPATH: %s, Value: '%s'", xpath,
+ value ? value : "NIL");
+
+ if (mgmt_be_get_subscr_info_for_xpath(xpath, &subscr_info)
+ != 0) {
+ snprintf(err_buf, sizeof(err_buf),
+ "No backend module found for XPATH: '%s",
+ xpath);
+ (void)mgmt_txn_send_commit_cfg_reply(
+ txn_req->txn, MGMTD_INTERNAL_ERROR, err_buf);
+ goto mgmt_txn_create_config_batches_failed;
+ }
+
+ xpath_len = strlen(xpath) + 1;
+ value_len = strlen(value) + 1;
+ found_validator = false;
+ FOREACH_MGMTD_BE_CLIENT_ID (id) {
+ if (!subscr_info.xpath_subscr[id].validate_config
+ && !subscr_info.xpath_subscr[id].notify_config)
+ continue;
+
+ adapter = mgmt_be_get_adapter_by_id(id);
+ if (!adapter)
+ continue;
+
+ cfg_btch = cmtcfg_req->last_be_cfg_batch[id];
+ if (!cfg_btch
+ || (cfg_btch->num_cfg_data
+ == MGMTD_MAX_CFG_CHANGES_IN_BATCH)
+ || (cfg_btch->buf_space_left
+ < (xpath_len + value_len))) {
+ /* Allocate a new config batch */
+ cfg_btch = mgmt_txn_cfg_batch_alloc(
+ txn_req->txn, id, adapter);
+ }
+
+ cfg_btch->buf_space_left -= (xpath_len + value_len);
+ memcpy(&cfg_btch->xp_subscr[cfg_btch->num_cfg_data],
+ &subscr_info.xpath_subscr[id],
+ sizeof(cfg_btch->xp_subscr[0]));
+
+ mgmt_yang_cfg_data_req_init(
+ &cfg_btch->cfg_data[cfg_btch->num_cfg_data]);
+ cfg_btch->cfg_datap[cfg_btch->num_cfg_data] =
+ &cfg_btch->cfg_data[cfg_btch->num_cfg_data];
+
+ if (chg->cb.operation == NB_OP_DESTROY)
+ cfg_btch->cfg_data[cfg_btch->num_cfg_data]
+ .req_type =
+ MGMTD__CFG_DATA_REQ_TYPE__DELETE_DATA;
+ else
+ cfg_btch->cfg_data[cfg_btch->num_cfg_data]
+ .req_type =
+ MGMTD__CFG_DATA_REQ_TYPE__SET_DATA;
+
+ mgmt_yang_data_init(
+ &cfg_btch->data[cfg_btch->num_cfg_data]);
+ cfg_btch->cfg_data[cfg_btch->num_cfg_data].data =
+ &cfg_btch->data[cfg_btch->num_cfg_data];
+ cfg_btch->data[cfg_btch->num_cfg_data].xpath = xpath;
+ xpath = NULL;
+
+ mgmt_yang_data_value_init(
+ &cfg_btch->value[cfg_btch->num_cfg_data]);
+ cfg_btch->data[cfg_btch->num_cfg_data].value =
+ &cfg_btch->value[cfg_btch->num_cfg_data];
+ cfg_btch->value[cfg_btch->num_cfg_data].value_case =
+ MGMTD__YANG_DATA_VALUE__VALUE_ENCODED_STR_VAL;
+ cfg_btch->value[cfg_btch->num_cfg_data]
+ .encoded_str_val = value;
+ value = NULL;
+
+ if (subscr_info.xpath_subscr[id].validate_config)
+ found_validator = true;
+
+ cmtcfg_req->subscr_info.xpath_subscr[id].subscribed |=
+ subscr_info.xpath_subscr[id].subscribed;
+ MGMTD_TXN_DBG(
+ " -- %s, {V:%d, N:%d}, Batch: %p, Item:%d",
+ adapter->name,
+ subscr_info.xpath_subscr[id].validate_config,
+ subscr_info.xpath_subscr[id].notify_config,
+ cfg_btch, (int)cfg_btch->num_cfg_data);
+
+ cfg_btch->num_cfg_data++;
+ num_chgs++;
+ }
+
+ if (!found_validator) {
+ snprintf(err_buf, sizeof(err_buf),
+ "No validator module found for XPATH: '%s",
+ xpath);
+ MGMTD_TXN_ERR("***** %s", err_buf);
+ }
+ }
+
+ cmtcfg_req->cmt_stats->last_batch_cnt = num_chgs;
+ if (!num_chgs) {
+ (void)mgmt_txn_send_commit_cfg_reply(
+ txn_req->txn, MGMTD_NO_CFG_CHANGES,
+ "No changes found to commit!");
+ goto mgmt_txn_create_config_batches_failed;
+ }
+
+ cmtcfg_req->next_phase = MGMTD_COMMIT_PHASE_TXN_CREATE;
+ return 0;
+
+mgmt_txn_create_config_batches_failed:
+
+ if (xpath)
+ free(xpath);
+
+ return -1;
+}
+
+static int mgmt_txn_prepare_config(struct mgmt_txn_ctx *txn)
+{
+ struct nb_context nb_ctx;
+ struct nb_config *nb_config;
+ struct nb_config_cbs changes;
+ struct nb_config_cbs *cfg_chgs = NULL;
+ int ret;
+ bool del_cfg_chgs = false;
+
+ ret = 0;
+ memset(&nb_ctx, 0, sizeof(nb_ctx));
+ memset(&changes, 0, sizeof(changes));
+ if (txn->commit_cfg_req->req.commit_cfg.cfg_chgs) {
+ cfg_chgs = txn->commit_cfg_req->req.commit_cfg.cfg_chgs;
+ del_cfg_chgs = true;
+ goto mgmt_txn_prep_config_validation_done;
+ }
+
+ if (txn->commit_cfg_req->req.commit_cfg.src_ds_id
+ != MGMTD_DS_CANDIDATE) {
+ (void)mgmt_txn_send_commit_cfg_reply(
+ txn, MGMTD_INVALID_PARAM,
+ "Source DS cannot be any other than CANDIDATE!");
+ ret = -1;
+ goto mgmt_txn_prepare_config_done;
+ }
+
+ if (txn->commit_cfg_req->req.commit_cfg.dst_ds_id
+ != MGMTD_DS_RUNNING) {
+ (void)mgmt_txn_send_commit_cfg_reply(
+ txn, MGMTD_INVALID_PARAM,
+ "Destination DS cannot be any other than RUNNING!");
+ ret = -1;
+ goto mgmt_txn_prepare_config_done;
+ }
+
+ if (!txn->commit_cfg_req->req.commit_cfg.src_ds_ctx) {
+ (void)mgmt_txn_send_commit_cfg_reply(
+ txn, MGMTD_INVALID_PARAM, "No such source datastore!");
+ ret = -1;
+ goto mgmt_txn_prepare_config_done;
+ }
+
+ if (!txn->commit_cfg_req->req.commit_cfg.dst_ds_ctx) {
+ (void)mgmt_txn_send_commit_cfg_reply(
+ txn, MGMTD_INVALID_PARAM,
+ "No such destination datastore!");
+ ret = -1;
+ goto mgmt_txn_prepare_config_done;
+ }
+
+ if (txn->commit_cfg_req->req.commit_cfg.abort) {
+ /*
+ * This is a commit abort request. Return back success.
+ * That should trigger a restore of Candidate datastore to
+ * Running.
+ */
+ (void)mgmt_txn_send_commit_cfg_reply(txn, MGMTD_SUCCESS,
+ NULL);
+ goto mgmt_txn_prepare_config_done;
+ }
+
+ nb_config = mgmt_ds_get_nb_config(
+ txn->commit_cfg_req->req.commit_cfg.src_ds_ctx);
+ if (!nb_config) {
+ (void)mgmt_txn_send_commit_cfg_reply(
+ txn, MGMTD_INTERNAL_ERROR,
+ "Unable to retrieve Commit DS Config Tree!");
+ ret = -1;
+ goto mgmt_txn_prepare_config_done;
+ }
+
+ /*
+ * Check for diffs from scratch buffer. If found empty
+ * get the diff from Candidate DS itself.
+ */
+ cfg_chgs = &nb_config->cfg_chgs;
+ if (RB_EMPTY(nb_config_cbs, cfg_chgs)) {
+ /*
+ * This could be the case when the config is directly
+ * loaded onto the candidate DS from a file. Get the
+ * diff from a full comparison of the candidate and
+ * running DSs.
+ */
+ nb_config_diff(
+ mgmt_ds_get_nb_config(txn->commit_cfg_req->req
+ .commit_cfg.dst_ds_ctx),
+ nb_config, &changes);
+ cfg_chgs = &changes;
+ del_cfg_chgs = true;
+ }
+
+ if (RB_EMPTY(nb_config_cbs, cfg_chgs)) {
+ /*
+ * This means there's no changes to commit whatsoever
+ * is the source of the changes in config.
+ */
+ (void)mgmt_txn_send_commit_cfg_reply(
+ txn, MGMTD_NO_CFG_CHANGES,
+ "No changes found to be committed!");
+ ret = -1;
+ goto mgmt_txn_prepare_config_done;
+ }
+
+#ifdef MGMTD_LOCAL_VALIDATIONS_ENABLED
+ if (mm->perf_stats_en)
+ gettimeofday(&txn->commit_cfg_req->req.commit_cfg.cmt_stats
+ ->validate_start,
+ NULL);
+ /*
+ * Validate YANG contents of the source DS and get the diff
+ * between source and destination DS contents.
+ */
+ char err_buf[1024] = {0};
+ nb_ctx.client = NB_CLIENT_MGMTD_SERVER;
+ nb_ctx.user = (void *)txn;
+ ret = nb_candidate_validate_yang(nb_config, false, err_buf,
+ sizeof(err_buf) - 1);
+ if (ret != NB_OK) {
+ if (strncmp(err_buf, " ", strlen(err_buf)) == 0)
+ strlcpy(err_buf, "Validation failed", sizeof(err_buf));
+ (void)mgmt_txn_send_commit_cfg_reply(txn, MGMTD_INVALID_PARAM,
+ err_buf);
+ ret = -1;
+ goto mgmt_txn_prepare_config_done;
+ }
+ /*
+ * Perform application level validations locally on the MGMTD
+ * process by calling application specific validation routines
+ * loaded onto MGMTD process using libraries.
+ */
+ ret = nb_candidate_validate_code(&nb_ctx, nb_config, &changes, err_buf,
+ sizeof(err_buf) - 1);
+ if (ret != NB_OK) {
+ if (strncmp(err_buf, " ", strlen(err_buf)) == 0)
+ strlcpy(err_buf, "Validation failed", sizeof(err_buf));
+ (void)mgmt_txn_send_commit_cfg_reply(txn, MGMTD_INVALID_PARAM,
+ err_buf);
+ ret = -1;
+ goto mgmt_txn_prepare_config_done;
+ }
+
+ if (txn->commit_cfg_req->req.commit_cfg.validate_only) {
+ /*
+ * This was a validate-only COMMIT request return success.
+ */
+ (void)mgmt_txn_send_commit_cfg_reply(txn, MGMTD_SUCCESS,
+ NULL);
+ goto mgmt_txn_prepare_config_done;
+ }
+#endif /* ifdef MGMTD_LOCAL_VALIDATIONS_ENABLED */
+
+mgmt_txn_prep_config_validation_done:
+
+ if (mm->perf_stats_en)
+ gettimeofday(&txn->commit_cfg_req->req.commit_cfg.cmt_stats
+ ->prep_cfg_start,
+ NULL);
+
+ /*
+ * Iterate over the diffs and create ordered batches of config
+ * commands to be validated.
+ */
+ ret = mgmt_txn_create_config_batches(txn->commit_cfg_req, cfg_chgs);
+ if (ret != 0) {
+ ret = -1;
+ goto mgmt_txn_prepare_config_done;
+ }
+
+ /* Move to the Transaction Create Phase */
+ txn->commit_cfg_req->req.commit_cfg.curr_phase =
+ MGMTD_COMMIT_PHASE_TXN_CREATE;
+ mgmt_txn_register_event(txn, MGMTD_TXN_PROC_COMMITCFG);
+
+ /*
+ * Start the COMMIT Timeout Timer to abort Txn if things get stuck at
+ * backend.
+ */
+ mgmt_txn_register_event(txn, MGMTD_TXN_COMMITCFG_TIMEOUT);
+mgmt_txn_prepare_config_done:
+
+ if (cfg_chgs && del_cfg_chgs)
+ nb_config_diff_del_changes(cfg_chgs);
+
+ return ret;
+}
+
+static int mgmt_txn_send_be_txn_create(struct mgmt_txn_ctx *txn)
+{
+ enum mgmt_be_client_id id;
+ struct mgmt_be_client_adapter *adapter;
+ struct mgmt_commit_cfg_req *cmtcfg_req;
+ struct mgmt_txn_be_cfg_batch *cfg_btch;
+
+ assert(txn->type == MGMTD_TXN_TYPE_CONFIG && txn->commit_cfg_req);
+
+ cmtcfg_req = &txn->commit_cfg_req->req.commit_cfg;
+ FOREACH_MGMTD_BE_CLIENT_ID (id) {
+ if (cmtcfg_req->subscr_info.xpath_subscr[id].subscribed) {
+ adapter = mgmt_be_get_adapter_by_id(id);
+ if (mgmt_be_create_txn(adapter, txn->txn_id)
+ != 0) {
+ (void)mgmt_txn_send_commit_cfg_reply(
+ txn, MGMTD_INTERNAL_ERROR,
+ "Could not send TXN_CREATE to backend adapter");
+ return -1;
+ }
+
+ FOREACH_TXN_CFG_BATCH_IN_LIST (
+ &txn->commit_cfg_req->req.commit_cfg
+ .curr_batches[id],
+ cfg_btch)
+ cfg_btch->comm_phase =
+ MGMTD_COMMIT_PHASE_TXN_CREATE;
+ }
+ }
+
+ txn->commit_cfg_req->req.commit_cfg.next_phase =
+ MGMTD_COMMIT_PHASE_SEND_CFG;
+
+ /*
+ * Dont move the commit to next phase yet. Wait for the TXN_REPLY to
+ * come back.
+ */
+
+ MGMTD_TXN_DBG(
+ "Txn:%p Session:0x%llx, Phase(Current:'%s', Next: '%s')", txn,
+ (unsigned long long)txn->session_id,
+ mgmt_txn_commit_phase_str(txn, true),
+ mgmt_txn_commit_phase_str(txn, false));
+
+ return 0;
+}
+
+static int
+mgmt_txn_send_be_cfg_data(struct mgmt_txn_ctx *txn,
+ struct mgmt_be_client_adapter *adapter)
+{
+ struct mgmt_commit_cfg_req *cmtcfg_req;
+ struct mgmt_txn_be_cfg_batch *cfg_btch;
+ struct mgmt_be_cfgreq cfg_req = {0};
+ size_t num_batches, indx;
+
+ assert(txn->type == MGMTD_TXN_TYPE_CONFIG && txn->commit_cfg_req);
+
+ cmtcfg_req = &txn->commit_cfg_req->req.commit_cfg;
+ assert(cmtcfg_req->subscr_info.xpath_subscr[adapter->id].subscribed);
+
+ indx = 0;
+ num_batches =
+ mgmt_txn_batches_count(&cmtcfg_req->curr_batches[adapter->id]);
+ FOREACH_TXN_CFG_BATCH_IN_LIST (&cmtcfg_req->curr_batches[adapter->id],
+ cfg_btch) {
+ assert(cmtcfg_req->next_phase == MGMTD_COMMIT_PHASE_SEND_CFG);
+
+ cfg_req.cfgdata_reqs = cfg_btch->cfg_datap;
+ cfg_req.num_reqs = cfg_btch->num_cfg_data;
+ indx++;
+ if (mgmt_be_send_cfg_data_create_req(
+ adapter, txn->txn_id, cfg_btch->batch_id, &cfg_req,
+ indx == num_batches ? true : false)
+ != 0) {
+ (void)mgmt_txn_send_commit_cfg_reply(
+ txn, MGMTD_INTERNAL_ERROR,
+ "Internal Error! Could not send config data to backend!");
+ MGMTD_TXN_ERR(
+ "Could not send CFGDATA_CREATE for Txn %p Batch %p to client '%s",
+ txn, cfg_btch, adapter->name);
+ return -1;
+ }
+
+ cmtcfg_req->cmt_stats->last_num_cfgdata_reqs++;
+ mgmt_move_txn_cfg_batch_to_next(
+ cmtcfg_req, cfg_btch,
+ &cmtcfg_req->curr_batches[adapter->id],
+ &cmtcfg_req->next_batches[adapter->id], true,
+ MGMTD_COMMIT_PHASE_SEND_CFG);
+ }
+
+ /*
+ * This could ne the last Backend Client to send CFGDATA_CREATE_REQ to.
+ * Try moving the commit to next phase.
+ */
+ mgmt_try_move_commit_to_next_phase(txn, cmtcfg_req);
+
+ return 0;
+}
+
+static int
+mgmt_txn_send_be_txn_delete(struct mgmt_txn_ctx *txn,
+ struct mgmt_be_client_adapter *adapter)
+{
+ struct mgmt_commit_cfg_req *cmtcfg_req;
+ struct mgmt_txn_be_cfg_batch *cfg_btch;
+
+ assert(txn->type == MGMTD_TXN_TYPE_CONFIG && txn->commit_cfg_req);
+
+ cmtcfg_req = &txn->commit_cfg_req->req.commit_cfg;
+ if (cmtcfg_req->subscr_info.xpath_subscr[adapter->id].subscribed) {
+ adapter = mgmt_be_get_adapter_by_id(adapter->id);
+ (void)mgmt_be_destroy_txn(adapter, txn->txn_id);
+
+ FOREACH_TXN_CFG_BATCH_IN_LIST (
+ &txn->commit_cfg_req->req.commit_cfg
+ .curr_batches[adapter->id],
+ cfg_btch)
+ cfg_btch->comm_phase = MGMTD_COMMIT_PHASE_TXN_DELETE;
+ }
+
+ return 0;
+}
+
+static void mgmt_txn_cfg_commit_timedout(struct thread *thread)
+{
+ struct mgmt_txn_ctx *txn;
+
+ txn = (struct mgmt_txn_ctx *)THREAD_ARG(thread);
+ assert(txn);
+
+ assert(txn->type == MGMTD_TXN_TYPE_CONFIG);
+
+ if (!txn->commit_cfg_req)
+ return;
+
+ MGMTD_TXN_ERR(
+ "Backend operations for Config Txn %p has timedout! Aborting commit!!",
+ txn);
+
+ /*
+ * Send a COMMIT_CONFIG_REPLY with failure.
+ * NOTE: The transaction cleanup will be triggered from Front-end
+ * adapter.
+ */
+ mgmt_txn_send_commit_cfg_reply(
+ txn, MGMTD_INTERNAL_ERROR,
+ "Operation on the backend timed-out. Aborting commit!");
+}
+
+/*
+ * Send CFG_APPLY_REQs to all the backend client.
+ *
+ * NOTE: This is always dispatched when all CFGDATA_CREATE_REQs
+ * for all backend clients has been generated. Please see
+ * mgmt_txn_register_event() and mgmt_txn_process_commit_cfg()
+ * for details.
+ */
+static int mgmt_txn_send_be_cfg_apply(struct mgmt_txn_ctx *txn)
+{
+ enum mgmt_be_client_id id;
+ struct mgmt_be_client_adapter *adapter;
+ struct mgmt_commit_cfg_req *cmtcfg_req;
+ struct mgmt_txn_batches_head *btch_list;
+ struct mgmt_txn_be_cfg_batch *cfg_btch;
+
+ assert(txn->type == MGMTD_TXN_TYPE_CONFIG && txn->commit_cfg_req);
+
+ cmtcfg_req = &txn->commit_cfg_req->req.commit_cfg;
+ if (cmtcfg_req->validate_only) {
+ /*
+ * If this was a validate-only COMMIT request return success.
+ */
+ (void)mgmt_txn_send_commit_cfg_reply(txn, MGMTD_SUCCESS,
+ NULL);
+ return 0;
+ }
+
+ FOREACH_MGMTD_BE_CLIENT_ID (id) {
+ if (cmtcfg_req->subscr_info.xpath_subscr[id].notify_config) {
+ adapter = mgmt_be_get_adapter_by_id(id);
+ if (!adapter)
+ return -1;
+
+ btch_list = &cmtcfg_req->curr_batches[id];
+ if (mgmt_be_send_cfg_apply_req(adapter, txn->txn_id)
+ != 0) {
+ (void)mgmt_txn_send_commit_cfg_reply(
+ txn, MGMTD_INTERNAL_ERROR,
+ "Could not send CFG_APPLY_REQ to backend adapter");
+ return -1;
+ }
+ cmtcfg_req->cmt_stats->last_num_apply_reqs++;
+
+ UNSET_FLAG(adapter->flags,
+ MGMTD_BE_ADAPTER_FLAGS_CFG_SYNCED);
+
+ FOREACH_TXN_CFG_BATCH_IN_LIST (btch_list, cfg_btch)
+ cfg_btch->comm_phase =
+ MGMTD_COMMIT_PHASE_APPLY_CFG;
+ }
+ }
+
+ txn->commit_cfg_req->req.commit_cfg.next_phase =
+ MGMTD_COMMIT_PHASE_TXN_DELETE;
+
+ /*
+ * Dont move the commit to next phase yet. Wait for all VALIDATE_REPLIES
+ * to come back.
+ */
+
+ return 0;
+}
+
+static void mgmt_txn_process_commit_cfg(struct thread *thread)
+{
+ struct mgmt_txn_ctx *txn;
+ struct mgmt_commit_cfg_req *cmtcfg_req;
+
+ txn = (struct mgmt_txn_ctx *)THREAD_ARG(thread);
+ assert(txn);
+
+ MGMTD_TXN_DBG(
+ "Processing COMMIT_CONFIG for Txn:%p Session:0x%llx, Phase(Current:'%s', Next: '%s')",
+ txn, (unsigned long long)txn->session_id,
+ mgmt_txn_commit_phase_str(txn, true),
+ mgmt_txn_commit_phase_str(txn, false));
+
+ assert(txn->commit_cfg_req);
+ cmtcfg_req = &txn->commit_cfg_req->req.commit_cfg;
+ switch (cmtcfg_req->curr_phase) {
+ case MGMTD_COMMIT_PHASE_PREPARE_CFG:
+ mgmt_txn_prepare_config(txn);
+ break;
+ case MGMTD_COMMIT_PHASE_TXN_CREATE:
+ if (mm->perf_stats_en)
+ gettimeofday(&cmtcfg_req->cmt_stats->txn_create_start,
+ NULL);
+ /*
+ * Send TXN_CREATE_REQ to all Backend now.
+ */
+ mgmt_txn_send_be_txn_create(txn);
+ break;
+ case MGMTD_COMMIT_PHASE_SEND_CFG:
+ if (mm->perf_stats_en)
+ gettimeofday(&cmtcfg_req->cmt_stats->send_cfg_start,
+ NULL);
+ /*
+ * All CFGDATA_CREATE_REQ should have been sent to
+ * Backend by now.
+ */
+#ifndef MGMTD_LOCAL_VALIDATIONS_ENABLED
+ assert(cmtcfg_req->next_phase == MGMTD_COMMIT_PHASE_APPLY_CFG);
+ MGMTD_TXN_DBG(
+ "Txn:%p Session:0x%llx, trigger sending CFG_VALIDATE_REQ to all backend clients",
+ txn, (unsigned long long)txn->session_id);
+#else /* ifndef MGMTD_LOCAL_VALIDATIONS_ENABLED */
+ assert(cmtcfg_req->next_phase == MGMTD_COMMIT_PHASE_APPLY_CFG);
+ MGMTD_TXN_DBG(
+ "Txn:%p Session:0x%llx, trigger sending CFG_APPLY_REQ to all backend clients",
+ txn, (unsigned long long)txn->session_id);
+#endif /* ifndef MGMTD_LOCAL_VALIDATIONS_ENABLED */
+ break;
+ case MGMTD_COMMIT_PHASE_APPLY_CFG:
+ if (mm->perf_stats_en)
+ gettimeofday(&cmtcfg_req->cmt_stats->apply_cfg_start,
+ NULL);
+ /*
+ * We should have received successful CFG_VALIDATE_REPLY from
+ * all concerned Backend Clients by now. Send out the
+ * CFG_APPLY_REQs now.
+ */
+ mgmt_txn_send_be_cfg_apply(txn);
+ break;
+ case MGMTD_COMMIT_PHASE_TXN_DELETE:
+ if (mm->perf_stats_en)
+ gettimeofday(&cmtcfg_req->cmt_stats->txn_del_start,
+ NULL);
+ /*
+ * We would have sent TXN_DELETE_REQ to all backend by now.
+ * Send a successful CONFIG_COMMIT_REPLY back to front-end.
+ * NOTE: This should also trigger DS merge/unlock and Txn
+ * cleanup. Please see mgmt_fe_send_commit_cfg_reply() for
+ * more details.
+ */
+ THREAD_OFF(txn->comm_cfg_timeout);
+ mgmt_txn_send_commit_cfg_reply(txn, MGMTD_SUCCESS, NULL);
+ break;
+ case MGMTD_COMMIT_PHASE_MAX:
+ break;
+ }
+
+ MGMTD_TXN_DBG(
+ "Txn:%p Session:0x%llx, Phase updated to (Current:'%s', Next: '%s')",
+ txn, (unsigned long long)txn->session_id,
+ mgmt_txn_commit_phase_str(txn, true),
+ mgmt_txn_commit_phase_str(txn, false));
+}
+
+static void mgmt_init_get_data_reply(struct mgmt_get_data_reply *get_reply)
+{
+ size_t indx;
+
+ for (indx = 0; indx < array_size(get_reply->reply_data); indx++)
+ get_reply->reply_datap[indx] = &get_reply->reply_data[indx];
+}
+
+static void mgmt_reset_get_data_reply(struct mgmt_get_data_reply *get_reply)
+{
+ int indx;
+
+ for (indx = 0; indx < get_reply->num_reply; indx++) {
+ if (get_reply->reply_xpathp[indx]) {
+ free(get_reply->reply_xpathp[indx]);
+ get_reply->reply_xpathp[indx] = 0;
+ }
+ if (get_reply->reply_data[indx].xpath) {
+ zlog_debug("%s free xpath %p", __func__,
+ get_reply->reply_data[indx].xpath);
+ free(get_reply->reply_data[indx].xpath);
+ get_reply->reply_data[indx].xpath = 0;
+ }
+ }
+
+ get_reply->num_reply = 0;
+ memset(&get_reply->data_reply, 0, sizeof(get_reply->data_reply));
+ memset(&get_reply->reply_data, 0, sizeof(get_reply->reply_data));
+ memset(&get_reply->reply_datap, 0, sizeof(get_reply->reply_datap));
+
+ memset(&get_reply->reply_value, 0, sizeof(get_reply->reply_value));
+
+ mgmt_init_get_data_reply(get_reply);
+}
+
+static void mgmt_reset_get_data_reply_buf(struct mgmt_get_data_req *get_data)
+{
+ if (get_data->reply)
+ mgmt_reset_get_data_reply(get_data->reply);
+}
+
+static void mgmt_txn_send_getcfg_reply_data(struct mgmt_txn_req *txn_req,
+ struct mgmt_get_data_req *get_req)
+{
+ struct mgmt_get_data_reply *get_reply;
+ Mgmtd__YangDataReply *data_reply;
+
+ get_reply = get_req->reply;
+ if (!get_reply)
+ return;
+
+ data_reply = &get_reply->data_reply;
+ mgmt_yang_data_reply_init(data_reply);
+ data_reply->n_data = get_reply->num_reply;
+ data_reply->data = get_reply->reply_datap;
+ data_reply->next_indx =
+ (!get_reply->last_batch ? get_req->total_reply : -1);
+
+ MGMTD_TXN_DBG("Sending %d Get-Config/Data replies (next-idx:%lld)",
+ (int) data_reply->n_data,
+ (long long)data_reply->next_indx);
+
+ switch (txn_req->req_event) {
+ case MGMTD_TXN_PROC_GETCFG:
+ if (mgmt_fe_send_get_cfg_reply(
+ txn_req->txn->session_id, txn_req->txn->txn_id,
+ get_req->ds_id, txn_req->req_id, MGMTD_SUCCESS,
+ data_reply, NULL)
+ != 0) {
+ MGMTD_TXN_ERR(
+ "Failed to send GET-CONFIG-REPLY for Txn %p, Sessn: 0x%llx, Req: %llu",
+ txn_req->txn,
+ (unsigned long long)txn_req->txn->session_id,
+ (unsigned long long)txn_req->req_id);
+ }
+ break;
+ case MGMTD_TXN_PROC_GETDATA:
+ if (mgmt_fe_send_get_data_reply(
+ txn_req->txn->session_id, txn_req->txn->txn_id,
+ get_req->ds_id, txn_req->req_id, MGMTD_SUCCESS,
+ data_reply, NULL)
+ != 0) {
+ MGMTD_TXN_ERR(
+ "Failed to send GET-DATA-REPLY for Txn %p, Sessn: 0x%llx, Req: %llu",
+ txn_req->txn,
+ (unsigned long long)txn_req->txn->session_id,
+ (unsigned long long)txn_req->req_id);
+ }
+ break;
+ case MGMTD_TXN_PROC_SETCFG:
+ case MGMTD_TXN_PROC_COMMITCFG:
+ case MGMTD_TXN_COMMITCFG_TIMEOUT:
+ case MGMTD_TXN_CLEANUP:
+ MGMTD_TXN_ERR("Invalid Txn-Req-Event %u",
+ txn_req->req_event);
+ break;
+ }
+
+ /*
+ * Reset reply buffer for next reply.
+ */
+ mgmt_reset_get_data_reply_buf(get_req);
+}
+
+static void mgmt_txn_iter_and_send_get_cfg_reply(struct mgmt_ds_ctx *ds_ctx,
+ char *xpath,
+ struct lyd_node *node,
+ struct nb_node *nb_node,
+ void *ctx)
+{
+ struct mgmt_txn_req *txn_req;
+ struct mgmt_get_data_req *get_req;
+ struct mgmt_get_data_reply *get_reply;
+ Mgmtd__YangData *data;
+ Mgmtd__YangDataValue *data_value;
+
+ txn_req = (struct mgmt_txn_req *)ctx;
+ if (!txn_req)
+ goto mgmtd_ignore_get_cfg_reply_data;
+
+ if (!(node->schema->nodetype & LYD_NODE_TERM))
+ goto mgmtd_ignore_get_cfg_reply_data;
+
+ assert(txn_req->req_event == MGMTD_TXN_PROC_GETCFG
+ || txn_req->req_event == MGMTD_TXN_PROC_GETDATA);
+
+ get_req = txn_req->req.get_data;
+ assert(get_req);
+ get_reply = get_req->reply;
+ data = &get_reply->reply_data[get_reply->num_reply];
+ data_value = &get_reply->reply_value[get_reply->num_reply];
+
+ mgmt_yang_data_init(data);
+ data->xpath = xpath;
+ mgmt_yang_data_value_init(data_value);
+ data_value->value_case = MGMTD__YANG_DATA_VALUE__VALUE_ENCODED_STR_VAL;
+ data_value->encoded_str_val = (char *)lyd_get_value(node);
+ data->value = data_value;
+
+ get_reply->num_reply++;
+ get_req->total_reply++;
+ MGMTD_TXN_DBG(" [%d] XPATH: '%s', Value: '%s'", get_req->total_reply,
+ data->xpath, data_value->encoded_str_val);
+
+ if (get_reply->num_reply == MGMTD_MAX_NUM_DATA_REPLY_IN_BATCH)
+ mgmt_txn_send_getcfg_reply_data(txn_req, get_req);
+
+ return;
+
+mgmtd_ignore_get_cfg_reply_data:
+ if (xpath)
+ free(xpath);
+}
+
+static int mgmt_txn_get_config(struct mgmt_txn_ctx *txn,
+ struct mgmt_txn_req *txn_req,
+ struct mgmt_ds_ctx *ds_ctx)
+{
+ struct mgmt_txn_reqs_head *req_list = NULL;
+ struct mgmt_txn_reqs_head *pending_list = NULL;
+ int indx;
+ struct mgmt_get_data_req *get_data;
+ struct mgmt_get_data_reply *get_reply;
+
+ switch (txn_req->req_event) {
+ case MGMTD_TXN_PROC_GETCFG:
+ req_list = &txn->get_cfg_reqs;
+ break;
+ case MGMTD_TXN_PROC_GETDATA:
+ req_list = &txn->get_data_reqs;
+ break;
+ case MGMTD_TXN_PROC_SETCFG:
+ case MGMTD_TXN_PROC_COMMITCFG:
+ case MGMTD_TXN_COMMITCFG_TIMEOUT:
+ case MGMTD_TXN_CLEANUP:
+ assert(!"Wrong txn request type!");
+ break;
+ }
+
+ get_data = txn_req->req.get_data;
+
+ if (!get_data->reply) {
+ get_data->reply = XCALLOC(MTYPE_MGMTD_TXN_GETDATA_REPLY,
+ sizeof(struct mgmt_get_data_reply));
+ if (!get_data->reply) {
+ mgmt_fe_send_get_cfg_reply(
+ txn->session_id, txn->txn_id,
+ get_data->ds_id, txn_req->req_id,
+ MGMTD_INTERNAL_ERROR, NULL,
+ "Internal error: Unable to allocate reply buffers!");
+ goto mgmt_txn_get_config_failed;
+ }
+ }
+
+ /*
+ * Read data contents from the DS and respond back directly.
+ * No need to go to backend for getting data.
+ */
+ get_reply = get_data->reply;
+ for (indx = 0; indx < get_data->num_xpaths; indx++) {
+ MGMTD_TXN_DBG("Trying to get all data under '%s'",
+ get_data->xpaths[indx]);
+ mgmt_init_get_data_reply(get_reply);
+ if (mgmt_ds_iter_data(get_data->ds_ctx, get_data->xpaths[indx],
+ mgmt_txn_iter_and_send_get_cfg_reply,
+ (void *)txn_req, true)
+ == -1) {
+ MGMTD_TXN_DBG("Invalid Xpath '%s",
+ get_data->xpaths[indx]);
+ mgmt_fe_send_get_cfg_reply(
+ txn->session_id, txn->txn_id,
+ get_data->ds_id, txn_req->req_id,
+ MGMTD_INTERNAL_ERROR, NULL, "Invalid xpath");
+ goto mgmt_txn_get_config_failed;
+ }
+ MGMTD_TXN_DBG("Got %d remaining data-replies for xpath '%s'",
+ get_reply->num_reply, get_data->xpaths[indx]);
+ get_reply->last_batch = true;
+ mgmt_txn_send_getcfg_reply_data(txn_req, get_data);
+ }
+
+mgmt_txn_get_config_failed:
+
+ if (pending_list) {
+ /*
+ * Move the transaction to corresponding pending list.
+ */
+ if (req_list)
+ mgmt_txn_reqs_del(req_list, txn_req);
+ txn_req->pending_be_proc = true;
+ mgmt_txn_reqs_add_tail(pending_list, txn_req);
+ MGMTD_TXN_DBG(
+ "Moved Req: %p for Txn: %p from Req-List to Pending-List",
+ txn_req, txn_req->txn);
+ } else {
+ /*
+ * Delete the txn request. It will also remove it from request
+ * list.
+ */
+ mgmt_txn_req_free(&txn_req);
+ }
+
+ return 0;
+}
+
+static void mgmt_txn_process_get_cfg(struct thread *thread)
+{
+ struct mgmt_txn_ctx *txn;
+ struct mgmt_txn_req *txn_req;
+ struct mgmt_ds_ctx *ds_ctx;
+ int num_processed = 0;
+ bool error;
+
+ txn = (struct mgmt_txn_ctx *)THREAD_ARG(thread);
+ assert(txn);
+
+ MGMTD_TXN_DBG(
+ "Processing %d GET_CONFIG requests for Txn:%p Session:0x%llx",
+ (int)mgmt_txn_reqs_count(&txn->get_cfg_reqs), txn,
+ (unsigned long long)txn->session_id);
+
+ FOREACH_TXN_REQ_IN_LIST (&txn->get_cfg_reqs, txn_req) {
+ error = false;
+ assert(txn_req->req_event == MGMTD_TXN_PROC_GETCFG);
+ ds_ctx = txn_req->req.get_data->ds_ctx;
+ if (!ds_ctx) {
+ mgmt_fe_send_get_cfg_reply(
+ txn->session_id, txn->txn_id,
+ txn_req->req.get_data->ds_id, txn_req->req_id,
+ MGMTD_INTERNAL_ERROR, NULL,
+ "No such datastore!");
+ error = true;
+ goto mgmt_txn_process_get_cfg_done;
+ }
+
+ if (mgmt_txn_get_config(txn, txn_req, ds_ctx) != 0) {
+ MGMTD_TXN_ERR(
+ "Unable to retrieve Config from DS %d for Txn %p, Sessn: 0x%llx, Req: %llu!",
+ txn_req->req.get_data->ds_id, txn,
+ (unsigned long long)txn->session_id,
+ (unsigned long long)txn_req->req_id);
+ error = true;
+ }
+
+ mgmt_txn_process_get_cfg_done:
+
+ if (error) {
+ /*
+ * Delete the txn request.
+ * Note: The following will remove it from the list
+ * as well.
+ */
+ mgmt_txn_req_free(&txn_req);
+ }
+
+ /*
+ * Else the transaction would have been already deleted or
+ * moved to corresponding pending list. No need to delete it.
+ */
+ num_processed++;
+ if (num_processed == MGMTD_TXN_MAX_NUM_GETCFG_PROC)
+ break;
+ }
+
+ if (mgmt_txn_reqs_count(&txn->get_cfg_reqs)) {
+ MGMTD_TXN_DBG(
+ "Processed maximum number of Get-Config requests (%d/%d). Rescheduling for rest.",
+ num_processed, MGMTD_TXN_MAX_NUM_GETCFG_PROC);
+ mgmt_txn_register_event(txn, MGMTD_TXN_PROC_GETCFG);
+ }
+}
+
+static void mgmt_txn_process_get_data(struct thread *thread)
+{
+ struct mgmt_txn_ctx *txn;
+ struct mgmt_txn_req *txn_req;
+ struct mgmt_ds_ctx *ds_ctx;
+ int num_processed = 0;
+ bool error;
+
+ txn = (struct mgmt_txn_ctx *)THREAD_ARG(thread);
+ assert(txn);
+
+ MGMTD_TXN_DBG(
+ "Processing %d GET_DATA requests for Txn:%p Session:0x%llx",
+ (int)mgmt_txn_reqs_count(&txn->get_data_reqs), txn,
+ (unsigned long long)txn->session_id);
+
+ FOREACH_TXN_REQ_IN_LIST (&txn->get_data_reqs, txn_req) {
+ error = false;
+ assert(txn_req->req_event == MGMTD_TXN_PROC_GETDATA);
+ ds_ctx = txn_req->req.get_data->ds_ctx;
+ if (!ds_ctx) {
+ mgmt_fe_send_get_data_reply(
+ txn->session_id, txn->txn_id,
+ txn_req->req.get_data->ds_id, txn_req->req_id,
+ MGMTD_INTERNAL_ERROR, NULL,
+ "No such datastore!");
+ error = true;
+ goto mgmt_txn_process_get_data_done;
+ }
+
+ if (mgmt_ds_is_config(ds_ctx)) {
+ if (mgmt_txn_get_config(txn, txn_req, ds_ctx)
+ != 0) {
+ MGMTD_TXN_ERR(
+ "Unable to retrieve Config from DS %d for Txn %p, Sessn: 0x%llx, Req: %llu!",
+ txn_req->req.get_data->ds_id, txn,
+ (unsigned long long)txn->session_id,
+ (unsigned long long)txn_req->req_id);
+ error = true;
+ }
+ } else {
+ /*
+ * TODO: Trigger GET procedures for Backend
+ * For now return back error.
+ */
+ mgmt_fe_send_get_data_reply(
+ txn->session_id, txn->txn_id,
+ txn_req->req.get_data->ds_id, txn_req->req_id,
+ MGMTD_INTERNAL_ERROR, NULL,
+ "GET-DATA on Oper DS is not supported yet!");
+ error = true;
+ }
+
+ mgmt_txn_process_get_data_done:
+
+ if (error) {
+ /*
+ * Delete the txn request.
+ * Note: The following will remove it from the list
+ * as well.
+ */
+ mgmt_txn_req_free(&txn_req);
+ }
+
+ /*
+ * Else the transaction would have been already deleted or
+ * moved to corresponding pending list. No need to delete it.
+ */
+ num_processed++;
+ if (num_processed == MGMTD_TXN_MAX_NUM_GETDATA_PROC)
+ break;
+ }
+
+ if (mgmt_txn_reqs_count(&txn->get_data_reqs)) {
+ MGMTD_TXN_DBG(
+ "Processed maximum number of Get-Data requests (%d/%d). Rescheduling for rest.",
+ num_processed, MGMTD_TXN_MAX_NUM_GETDATA_PROC);
+ mgmt_txn_register_event(txn, MGMTD_TXN_PROC_GETDATA);
+ }
+}
+
+static struct mgmt_txn_ctx *
+mgmt_fe_find_txn_by_session_id(struct mgmt_master *cm, uint64_t session_id,
+ enum mgmt_txn_type type)
+{
+ struct mgmt_txn_ctx *txn;
+
+ FOREACH_TXN_IN_LIST (cm, txn) {
+ if (txn->session_id == session_id && txn->type == type)
+ return txn;
+ }
+
+ return NULL;
+}
+
+static struct mgmt_txn_ctx *mgmt_txn_create_new(uint64_t session_id,
+ enum mgmt_txn_type type)
+{
+ struct mgmt_txn_ctx *txn = NULL;
+
+ /*
+ * For 'CONFIG' transaction check if one is already created
+ * or not.
+ */
+ if (type == MGMTD_TXN_TYPE_CONFIG && mgmt_txn_mm->cfg_txn) {
+ if (mgmt_config_txn_in_progress() == session_id)
+ txn = mgmt_txn_mm->cfg_txn;
+ goto mgmt_create_txn_done;
+ }
+
+ txn = mgmt_fe_find_txn_by_session_id(mgmt_txn_mm, session_id,
+ type);
+ if (!txn) {
+ txn = XCALLOC(MTYPE_MGMTD_TXN, sizeof(struct mgmt_txn_ctx));
+ assert(txn);
+
+ txn->session_id = session_id;
+ txn->type = type;
+ mgmt_txn_badapters_init(&txn->be_adapters);
+ mgmt_txns_add_tail(&mgmt_txn_mm->txn_list, txn);
+ mgmt_txn_reqs_init(&txn->set_cfg_reqs);
+ mgmt_txn_reqs_init(&txn->get_cfg_reqs);
+ mgmt_txn_reqs_init(&txn->get_data_reqs);
+ mgmt_txn_reqs_init(&txn->pending_get_datas);
+ txn->commit_cfg_req = NULL;
+ txn->refcount = 0;
+ if (!mgmt_txn_mm->next_txn_id)
+ mgmt_txn_mm->next_txn_id++;
+ txn->txn_id = mgmt_txn_mm->next_txn_id++;
+ hash_get(mgmt_txn_mm->txn_hash, txn, hash_alloc_intern);
+
+ MGMTD_TXN_DBG("Added new '%s' MGMTD Transaction '%p'",
+ mgmt_txn_type2str(type), txn);
+
+ if (type == MGMTD_TXN_TYPE_CONFIG)
+ mgmt_txn_mm->cfg_txn = txn;
+
+ MGMTD_TXN_LOCK(txn);
+ }
+
+mgmt_create_txn_done:
+ return txn;
+}
+
+static void mgmt_txn_delete(struct mgmt_txn_ctx **txn)
+{
+ MGMTD_TXN_UNLOCK(txn);
+}
+
+static unsigned int mgmt_txn_hash_key(const void *data)
+{
+ const struct mgmt_txn_ctx *txn = data;
+
+ return jhash2((uint32_t *) &txn->txn_id,
+ sizeof(txn->txn_id) / sizeof(uint32_t), 0);
+}
+
+static bool mgmt_txn_hash_cmp(const void *d1, const void *d2)
+{
+ const struct mgmt_txn_ctx *txn1 = d1;
+ const struct mgmt_txn_ctx *txn2 = d2;
+
+ return (txn1->txn_id == txn2->txn_id);
+}
+
+static void mgmt_txn_hash_free(void *data)
+{
+ struct mgmt_txn_ctx *txn = data;
+
+ mgmt_txn_delete(&txn);
+}
+
+static void mgmt_txn_hash_init(void)
+{
+ if (!mgmt_txn_mm || mgmt_txn_mm->txn_hash)
+ return;
+
+ mgmt_txn_mm->txn_hash = hash_create(mgmt_txn_hash_key,
+ mgmt_txn_hash_cmp,
+ "MGMT Transactions");
+}
+
+static void mgmt_txn_hash_destroy(void)
+{
+ if (!mgmt_txn_mm || !mgmt_txn_mm->txn_hash)
+ return;
+
+ hash_clean(mgmt_txn_mm->txn_hash,
+ mgmt_txn_hash_free);
+ hash_free(mgmt_txn_mm->txn_hash);
+ mgmt_txn_mm->txn_hash = NULL;
+}
+
+static inline struct mgmt_txn_ctx *
+mgmt_txn_id2ctx(uint64_t txn_id)
+{
+ struct mgmt_txn_ctx key = {0};
+ struct mgmt_txn_ctx *txn;
+
+ if (!mgmt_txn_mm || !mgmt_txn_mm->txn_hash)
+ return NULL;
+
+ key.txn_id = txn_id;
+ txn = hash_lookup(mgmt_txn_mm->txn_hash, &key);
+
+ return txn;
+}
+
+static void mgmt_txn_lock(struct mgmt_txn_ctx *txn, const char *file,
+ int line)
+{
+ txn->refcount++;
+ MGMTD_TXN_DBG("%s:%d --> Lock %s Txn %p, Count: %d", file, line,
+ mgmt_txn_type2str(txn->type), txn, txn->refcount);
+}
+
+static void mgmt_txn_unlock(struct mgmt_txn_ctx **txn, const char *file,
+ int line)
+{
+ assert(*txn && (*txn)->refcount);
+
+ (*txn)->refcount--;
+ MGMTD_TXN_DBG("%s:%d --> Unlock %s Txn %p, Count: %d", file, line,
+ mgmt_txn_type2str((*txn)->type), *txn,
+ (*txn)->refcount);
+ if (!(*txn)->refcount) {
+ if ((*txn)->type == MGMTD_TXN_TYPE_CONFIG)
+ if (mgmt_txn_mm->cfg_txn == *txn)
+ mgmt_txn_mm->cfg_txn = NULL;
+ THREAD_OFF((*txn)->proc_get_cfg);
+ THREAD_OFF((*txn)->proc_get_data);
+ THREAD_OFF((*txn)->proc_comm_cfg);
+ THREAD_OFF((*txn)->comm_cfg_timeout);
+ hash_release(mgmt_txn_mm->txn_hash, *txn);
+ mgmt_txns_del(&mgmt_txn_mm->txn_list, *txn);
+
+ MGMTD_TXN_DBG("Deleted %s Txn %p for Sessn: 0x%llx",
+ mgmt_txn_type2str((*txn)->type), *txn,
+ (unsigned long long)(*txn)->session_id);
+
+ XFREE(MTYPE_MGMTD_TXN, *txn);
+ }
+
+ *txn = NULL;
+}
+
+static void mgmt_txn_cleanup_txn(struct mgmt_txn_ctx **txn)
+{
+ /* TODO: Any other cleanup applicable */
+
+ mgmt_txn_delete(txn);
+}
+
+static void
+mgmt_txn_cleanup_all_txns(void)
+{
+ struct mgmt_txn_ctx *txn;
+
+ if (!mgmt_txn_mm || !mgmt_txn_mm->txn_hash)
+ return;
+
+ FOREACH_TXN_IN_LIST (mgmt_txn_mm, txn)
+ mgmt_txn_cleanup_txn(&txn);
+}
+
+static void mgmt_txn_cleanup(struct thread *thread)
+{
+ struct mgmt_txn_ctx *txn;
+
+ txn = (struct mgmt_txn_ctx *)THREAD_ARG(thread);
+ assert(txn);
+
+ mgmt_txn_cleanup_txn(&txn);
+}
+
+static void mgmt_txn_register_event(struct mgmt_txn_ctx *txn,
+ enum mgmt_txn_event event)
+{
+ struct timeval tv = {.tv_sec = 0,
+ .tv_usec = MGMTD_TXN_PROC_DELAY_USEC};
+
+ assert(mgmt_txn_mm && mgmt_txn_tm);
+
+ switch (event) {
+ case MGMTD_TXN_PROC_SETCFG:
+ thread_add_timer_tv(mgmt_txn_tm, mgmt_txn_process_set_cfg,
+ txn, &tv, &txn->proc_set_cfg);
+ assert(txn->proc_set_cfg);
+ break;
+ case MGMTD_TXN_PROC_COMMITCFG:
+ thread_add_timer_tv(mgmt_txn_tm, mgmt_txn_process_commit_cfg,
+ txn, &tv, &txn->proc_comm_cfg);
+ assert(txn->proc_comm_cfg);
+ break;
+ case MGMTD_TXN_PROC_GETCFG:
+ thread_add_timer_tv(mgmt_txn_tm, mgmt_txn_process_get_cfg,
+ txn, &tv, &txn->proc_get_cfg);
+ assert(txn->proc_get_cfg);
+ break;
+ case MGMTD_TXN_PROC_GETDATA:
+ thread_add_timer_tv(mgmt_txn_tm, mgmt_txn_process_get_data,
+ txn, &tv, &txn->proc_get_data);
+ assert(txn->proc_get_data);
+ break;
+ case MGMTD_TXN_COMMITCFG_TIMEOUT:
+ thread_add_timer_msec(mgmt_txn_tm,
+ mgmt_txn_cfg_commit_timedout, txn,
+ MGMTD_TXN_CFG_COMMIT_MAX_DELAY_MSEC,
+ &txn->comm_cfg_timeout);
+ assert(txn->comm_cfg_timeout);
+ break;
+ case MGMTD_TXN_CLEANUP:
+ tv.tv_usec = MGMTD_TXN_CLEANUP_DELAY_USEC;
+ thread_add_timer_tv(mgmt_txn_tm, mgmt_txn_cleanup, txn, &tv,
+ &txn->clnup);
+ assert(txn->clnup);
+ }
+}
+
+int mgmt_txn_init(struct mgmt_master *mm, struct thread_master *tm)
+{
+ if (mgmt_txn_mm || mgmt_txn_tm)
+ assert(!"MGMTD TXN: Call txn_init() only once");
+
+ mgmt_txn_mm = mm;
+ mgmt_txn_tm = tm;
+ mgmt_txns_init(&mm->txn_list);
+ mgmt_txn_hash_init();
+ assert(!mm->cfg_txn);
+ mm->cfg_txn = NULL;
+
+ return 0;
+}
+
+void mgmt_txn_destroy(void)
+{
+ mgmt_txn_cleanup_all_txns();
+ mgmt_txn_hash_destroy();
+}
+
+uint64_t mgmt_config_txn_in_progress(void)
+{
+ if (mgmt_txn_mm && mgmt_txn_mm->cfg_txn)
+ return mgmt_txn_mm->cfg_txn->session_id;
+
+ return MGMTD_SESSION_ID_NONE;
+}
+
+uint64_t mgmt_create_txn(uint64_t session_id, enum mgmt_txn_type type)
+{
+ struct mgmt_txn_ctx *txn;
+
+ txn = mgmt_txn_create_new(session_id, type);
+ return txn ? txn->txn_id : MGMTD_TXN_ID_NONE;
+}
+
+bool mgmt_txn_id_is_valid(uint64_t txn_id)
+{
+ return mgmt_txn_id2ctx(txn_id) ? true : false;
+}
+
+void mgmt_destroy_txn(uint64_t *txn_id)
+{
+ struct mgmt_txn_ctx *txn;
+
+ txn = mgmt_txn_id2ctx(*txn_id);
+ if (!txn)
+ return;
+
+ mgmt_txn_delete(&txn);
+ *txn_id = MGMTD_TXN_ID_NONE;
+}
+
+enum mgmt_txn_type mgmt_get_txn_type(uint64_t txn_id)
+{
+ struct mgmt_txn_ctx *txn;
+
+ txn = mgmt_txn_id2ctx(txn_id);
+ if (!txn)
+ return MGMTD_TXN_TYPE_NONE;
+
+ return txn->type;
+}
+
+int mgmt_txn_send_set_config_req(uint64_t txn_id, uint64_t req_id,
+ Mgmtd__DatastoreId ds_id,
+ struct mgmt_ds_ctx *ds_ctx,
+ Mgmtd__YangCfgDataReq **cfg_req,
+ size_t num_req, bool implicit_commit,
+ Mgmtd__DatastoreId dst_ds_id,
+ struct mgmt_ds_ctx *dst_ds_ctx)
+{
+ struct mgmt_txn_ctx *txn;
+ struct mgmt_txn_req *txn_req;
+ size_t indx;
+ uint16_t *num_chgs;
+ struct nb_cfg_change *cfg_chg;
+
+ txn = mgmt_txn_id2ctx(txn_id);
+ if (!txn)
+ return -1;
+
+ if (implicit_commit && mgmt_txn_reqs_count(&txn->set_cfg_reqs)) {
+ MGMTD_TXN_ERR(
+ "For implicit commit config only one SETCFG-REQ can be allowed!");
+ return -1;
+ }
+
+ txn_req = mgmt_txn_req_alloc(txn, req_id, MGMTD_TXN_PROC_SETCFG);
+ txn_req->req.set_cfg->ds_id = ds_id;
+ txn_req->req.set_cfg->ds_ctx = ds_ctx;
+ num_chgs = &txn_req->req.set_cfg->num_cfg_changes;
+ for (indx = 0; indx < num_req; indx++) {
+ cfg_chg = &txn_req->req.set_cfg->cfg_changes[*num_chgs];
+
+ if (cfg_req[indx]->req_type
+ == MGMTD__CFG_DATA_REQ_TYPE__DELETE_DATA)
+ cfg_chg->operation = NB_OP_DESTROY;
+ else if (cfg_req[indx]->req_type
+ == MGMTD__CFG_DATA_REQ_TYPE__SET_DATA)
+ cfg_chg->operation =
+ mgmt_ds_find_data_node_by_xpath(
+ ds_ctx, cfg_req[indx]->data->xpath)
+ ? NB_OP_MODIFY
+ : NB_OP_CREATE;
+ else
+ continue;
+
+ MGMTD_TXN_DBG(
+ "XPath: '%s', Value: '%s'", cfg_req[indx]->data->xpath,
+ (cfg_req[indx]->data->value
+ && cfg_req[indx]
+ ->data->value
+ ->encoded_str_val
+ ? cfg_req[indx]->data->value->encoded_str_val
+ : "NULL"));
+ strlcpy(cfg_chg->xpath, cfg_req[indx]->data->xpath,
+ sizeof(cfg_chg->xpath));
+ cfg_chg->value = (cfg_req[indx]->data->value
+ && cfg_req[indx]
+ ->data->value
+ ->encoded_str_val
+ ? strdup(cfg_req[indx]
+ ->data->value
+ ->encoded_str_val)
+ : NULL);
+ if (cfg_chg->value)
+ MGMTD_TXN_DBG("Allocated value at %p ==> '%s'",
+ cfg_chg->value, cfg_chg->value);
+
+ (*num_chgs)++;
+ }
+ txn_req->req.set_cfg->implicit_commit = implicit_commit;
+ txn_req->req.set_cfg->dst_ds_id = dst_ds_id;
+ txn_req->req.set_cfg->dst_ds_ctx = dst_ds_ctx;
+ txn_req->req.set_cfg->setcfg_stats =
+ mgmt_fe_get_session_setcfg_stats(txn->session_id);
+ mgmt_txn_register_event(txn, MGMTD_TXN_PROC_SETCFG);
+
+ return 0;
+}
+
+int mgmt_txn_send_commit_config_req(uint64_t txn_id, uint64_t req_id,
+ Mgmtd__DatastoreId src_ds_id,
+ struct mgmt_ds_ctx *src_ds_ctx,
+ Mgmtd__DatastoreId dst_ds_id,
+ struct mgmt_ds_ctx *dst_ds_ctx,
+ bool validate_only, bool abort,
+ bool implicit)
+{
+ struct mgmt_txn_ctx *txn;
+ struct mgmt_txn_req *txn_req;
+
+ txn = mgmt_txn_id2ctx(txn_id);
+ if (!txn)
+ return -1;
+
+ if (txn->commit_cfg_req) {
+ MGMTD_TXN_ERR(
+ "A commit is already in-progress for Txn %p, session 0x%llx. Cannot start another!",
+ txn, (unsigned long long)txn->session_id);
+ return -1;
+ }
+
+ txn_req = mgmt_txn_req_alloc(txn, req_id, MGMTD_TXN_PROC_COMMITCFG);
+ txn_req->req.commit_cfg.src_ds_id = src_ds_id;
+ txn_req->req.commit_cfg.src_ds_ctx = src_ds_ctx;
+ txn_req->req.commit_cfg.dst_ds_id = dst_ds_id;
+ txn_req->req.commit_cfg.dst_ds_ctx = dst_ds_ctx;
+ txn_req->req.commit_cfg.validate_only = validate_only;
+ txn_req->req.commit_cfg.abort = abort;
+ txn_req->req.commit_cfg.implicit = implicit;
+ txn_req->req.commit_cfg.cmt_stats =
+ mgmt_fe_get_session_commit_stats(txn->session_id);
+
+ /*
+ * Trigger a COMMIT-CONFIG process.
+ */
+ mgmt_txn_register_event(txn, MGMTD_TXN_PROC_COMMITCFG);
+ return 0;
+}
+
+int mgmt_txn_notify_be_adapter_conn(struct mgmt_be_client_adapter *adapter,
+ bool connect)
+{
+ struct mgmt_txn_ctx *txn;
+ struct mgmt_txn_req *txn_req;
+ struct mgmt_commit_cfg_req *cmtcfg_req;
+ static struct mgmt_commit_stats dummy_stats;
+ struct nb_config_cbs *adapter_cfgs = NULL;
+
+ memset(&dummy_stats, 0, sizeof(dummy_stats));
+ if (connect) {
+ /* Get config for this single backend client */
+ mgmt_be_get_adapter_config(adapter, mm->running_ds,
+ &adapter_cfgs);
+
+ if (!adapter_cfgs || RB_EMPTY(nb_config_cbs, adapter_cfgs)) {
+ SET_FLAG(adapter->flags,
+ MGMTD_BE_ADAPTER_FLAGS_CFG_SYNCED);
+ return 0;
+ }
+
+ /*
+ * Create a CONFIG transaction to push the config changes
+ * provided to the backend client.
+ */
+ txn = mgmt_txn_create_new(0, MGMTD_TXN_TYPE_CONFIG);
+ if (!txn) {
+ MGMTD_TXN_ERR(
+ "Failed to create CONFIG Transaction for downloading CONFIGs for client '%s'",
+ adapter->name);
+ return -1;
+ }
+
+ /*
+ * Set the changeset for transaction to commit and trigger the
+ * commit request.
+ */
+ txn_req =
+ mgmt_txn_req_alloc(txn, 0, MGMTD_TXN_PROC_COMMITCFG);
+ txn_req->req.commit_cfg.src_ds_id = MGMTD_DS_NONE;
+ txn_req->req.commit_cfg.src_ds_ctx = 0;
+ txn_req->req.commit_cfg.dst_ds_id = MGMTD_DS_NONE;
+ txn_req->req.commit_cfg.dst_ds_ctx = 0;
+ txn_req->req.commit_cfg.validate_only = false;
+ txn_req->req.commit_cfg.abort = false;
+ txn_req->req.commit_cfg.cmt_stats = &dummy_stats;
+ txn_req->req.commit_cfg.cfg_chgs = adapter_cfgs;
+
+ /*
+ * Trigger a COMMIT-CONFIG process.
+ */
+ mgmt_txn_register_event(txn, MGMTD_TXN_PROC_COMMITCFG);
+
+ } else {
+ /*
+ * Check if any transaction is currently on-going that
+ * involves this backend client. If so, report the transaction
+ * has failed.
+ */
+ FOREACH_TXN_IN_LIST (mgmt_txn_mm, txn) {
+ if (txn->type == MGMTD_TXN_TYPE_CONFIG) {
+ cmtcfg_req = txn->commit_cfg_req
+ ? &txn->commit_cfg_req
+ ->req.commit_cfg
+ : NULL;
+ if (cmtcfg_req
+ && cmtcfg_req->subscr_info
+ .xpath_subscr[adapter->id]
+ .subscribed) {
+ mgmt_txn_send_commit_cfg_reply(
+ txn, MGMTD_INTERNAL_ERROR,
+ "Backend daemon disconnected while processing commit!");
+ }
+ }
+ }
+ }
+
+ return 0;
+}
+
+int mgmt_txn_notify_be_txn_reply(uint64_t txn_id, bool create,
+ bool success,
+ struct mgmt_be_client_adapter *adapter)
+{
+ struct mgmt_txn_ctx *txn;
+ struct mgmt_commit_cfg_req *cmtcfg_req = NULL;
+
+ txn = mgmt_txn_id2ctx(txn_id);
+ if (!txn || txn->type != MGMTD_TXN_TYPE_CONFIG)
+ return -1;
+
+ if (!create && !txn->commit_cfg_req)
+ return 0;
+
+ assert(txn->commit_cfg_req);
+ cmtcfg_req = &txn->commit_cfg_req->req.commit_cfg;
+ if (create) {
+ if (success) {
+ /*
+ * Done with TXN_CREATE. Move the backend client to
+ * next phase.
+ */
+ assert(cmtcfg_req->curr_phase
+ == MGMTD_COMMIT_PHASE_TXN_CREATE);
+
+ /*
+ * Send CFGDATA_CREATE-REQs to the backend immediately.
+ */
+ mgmt_txn_send_be_cfg_data(txn, adapter);
+ } else {
+ mgmt_txn_send_commit_cfg_reply(
+ txn, MGMTD_INTERNAL_ERROR,
+ "Internal error! Failed to initiate transaction at backend!");
+ }
+ } else {
+ /*
+ * Done with TXN_DELETE. Move the backend client to next phase.
+ */
+ if (false)
+ mgmt_move_be_commit_to_next_phase(txn, adapter);
+ }
+
+ return 0;
+}
+
+int mgmt_txn_notify_be_cfgdata_reply(
+ uint64_t txn_id, uint64_t batch_id, bool success, char *error_if_any,
+ struct mgmt_be_client_adapter *adapter)
+{
+ struct mgmt_txn_ctx *txn;
+ struct mgmt_txn_be_cfg_batch *cfg_btch;
+ struct mgmt_commit_cfg_req *cmtcfg_req = NULL;
+
+ txn = mgmt_txn_id2ctx(txn_id);
+ if (!txn || txn->type != MGMTD_TXN_TYPE_CONFIG)
+ return -1;
+
+ if (!txn->commit_cfg_req)
+ return -1;
+ cmtcfg_req = &txn->commit_cfg_req->req.commit_cfg;
+
+ cfg_btch = mgmt_txn_cfgbatch_id2ctx(txn, batch_id);
+ if (!cfg_btch || cfg_btch->txn != txn)
+ return -1;
+
+ if (!success) {
+ MGMTD_TXN_ERR(
+ "CFGDATA_CREATE_REQ sent to '%s' failed for Txn %p, Batch %p, Err: %s",
+ adapter->name, txn, cfg_btch,
+ error_if_any ? error_if_any : "None");
+ mgmt_txn_send_commit_cfg_reply(
+ txn, MGMTD_INTERNAL_ERROR,
+ "Internal error! Failed to download config data to backend!");
+ return 0;
+ }
+
+ MGMTD_TXN_DBG(
+ "CFGDATA_CREATE_REQ sent to '%s' was successful for Txn %p, Batch %p, Err: %s",
+ adapter->name, txn, cfg_btch,
+ error_if_any ? error_if_any : "None");
+ mgmt_move_txn_cfg_batch_to_next(
+ cmtcfg_req, cfg_btch, &cmtcfg_req->curr_batches[adapter->id],
+ &cmtcfg_req->next_batches[adapter->id], true,
+ MGMTD_COMMIT_PHASE_APPLY_CFG);
+
+ mgmt_try_move_commit_to_next_phase(txn, cmtcfg_req);
+
+ return 0;
+}
+
+int mgmt_txn_notify_be_cfg_validate_reply(
+ uint64_t txn_id, bool success, uint64_t batch_ids[],
+ size_t num_batch_ids, char *error_if_any,
+ struct mgmt_be_client_adapter *adapter)
+{
+ struct mgmt_txn_ctx *txn;
+ struct mgmt_txn_be_cfg_batch *cfg_btch;
+ struct mgmt_commit_cfg_req *cmtcfg_req = NULL;
+ size_t indx;
+
+ txn = mgmt_txn_id2ctx(txn_id);
+ if (!txn || txn->type != MGMTD_TXN_TYPE_CONFIG)
+ return -1;
+
+ assert(txn->commit_cfg_req);
+ cmtcfg_req = &txn->commit_cfg_req->req.commit_cfg;
+
+ if (!success) {
+ MGMTD_TXN_ERR(
+ "CFGDATA_VALIDATE_REQ sent to '%s' failed for Txn %p, Batches [0x%llx - 0x%llx], Err: %s",
+ adapter->name, txn, (unsigned long long)batch_ids[0],
+ (unsigned long long)batch_ids[num_batch_ids - 1],
+ error_if_any ? error_if_any : "None");
+ mgmt_txn_send_commit_cfg_reply(
+ txn, MGMTD_INTERNAL_ERROR,
+ "Internal error! Failed to validate config data on backend!");
+ return 0;
+ }
+
+ for (indx = 0; indx < num_batch_ids; indx++) {
+ cfg_btch = mgmt_txn_cfgbatch_id2ctx(txn, batch_ids[indx]);
+ if (cfg_btch->txn != txn)
+ return -1;
+ mgmt_move_txn_cfg_batch_to_next(
+ cmtcfg_req, cfg_btch,
+ &cmtcfg_req->curr_batches[adapter->id],
+ &cmtcfg_req->next_batches[adapter->id], true,
+ MGMTD_COMMIT_PHASE_APPLY_CFG);
+ }
+
+ mgmt_try_move_commit_to_next_phase(txn, cmtcfg_req);
+
+ return 0;
+}
+
+extern int
+mgmt_txn_notify_be_cfg_apply_reply(uint64_t txn_id, bool success,
+ uint64_t batch_ids[],
+ size_t num_batch_ids, char *error_if_any,
+ struct mgmt_be_client_adapter *adapter)
+{
+ struct mgmt_txn_ctx *txn;
+ struct mgmt_txn_be_cfg_batch *cfg_btch;
+ struct mgmt_commit_cfg_req *cmtcfg_req = NULL;
+ size_t indx;
+
+ txn = mgmt_txn_id2ctx(txn_id);
+ if (!txn || txn->type != MGMTD_TXN_TYPE_CONFIG
+ || !txn->commit_cfg_req)
+ return -1;
+
+ cmtcfg_req = &txn->commit_cfg_req->req.commit_cfg;
+
+ if (!success) {
+ MGMTD_TXN_ERR(
+ "CFGDATA_APPLY_REQ sent to '%s' failed for Txn %p, Batches [0x%llx - 0x%llx], Err: %s",
+ adapter->name, txn, (unsigned long long)batch_ids[0],
+ (unsigned long long)batch_ids[num_batch_ids - 1],
+ error_if_any ? error_if_any : "None");
+ mgmt_txn_send_commit_cfg_reply(
+ txn, MGMTD_INTERNAL_ERROR,
+ "Internal error! Failed to apply config data on backend!");
+ return 0;
+ }
+
+ for (indx = 0; indx < num_batch_ids; indx++) {
+ cfg_btch = mgmt_txn_cfgbatch_id2ctx(txn, batch_ids[indx]);
+ if (cfg_btch->txn != txn)
+ return -1;
+ mgmt_move_txn_cfg_batch_to_next(
+ cmtcfg_req, cfg_btch,
+ &cmtcfg_req->curr_batches[adapter->id],
+ &cmtcfg_req->next_batches[adapter->id], true,
+ MGMTD_COMMIT_PHASE_TXN_DELETE);
+ }
+
+ if (!mgmt_txn_batches_count(&cmtcfg_req->curr_batches[adapter->id])) {
+ /*
+ * All configuration for the specific backend has been applied.
+ * Send TXN-DELETE to wrap up the transaction for this backend.
+ */
+ SET_FLAG(adapter->flags, MGMTD_BE_ADAPTER_FLAGS_CFG_SYNCED);
+ mgmt_txn_send_be_txn_delete(txn, adapter);
+ }
+
+ mgmt_try_move_commit_to_next_phase(txn, cmtcfg_req);
+ if (mm->perf_stats_en)
+ gettimeofday(&cmtcfg_req->cmt_stats->apply_cfg_end, NULL);
+
+ return 0;
+}
+
+int mgmt_txn_send_commit_config_reply(uint64_t txn_id,
+ enum mgmt_result result,
+ const char *error_if_any)
+{
+ struct mgmt_txn_ctx *txn;
+
+ txn = mgmt_txn_id2ctx(txn_id);
+ if (!txn)
+ return -1;
+
+ if (!txn->commit_cfg_req) {
+ MGMTD_TXN_ERR(
+ "NO commit in-progress for Txn %p, session 0x%llx!",
+ txn, (unsigned long long)txn->session_id);
+ return -1;
+ }
+
+ return mgmt_txn_send_commit_cfg_reply(txn, result, error_if_any);
+}
+
+int mgmt_txn_send_get_config_req(uint64_t txn_id, uint64_t req_id,
+ Mgmtd__DatastoreId ds_id,
+ struct mgmt_ds_ctx *ds_ctx,
+ Mgmtd__YangGetDataReq **data_req,
+ size_t num_reqs)
+{
+ struct mgmt_txn_ctx *txn;
+ struct mgmt_txn_req *txn_req;
+ size_t indx;
+
+ txn = mgmt_txn_id2ctx(txn_id);
+ if (!txn)
+ return -1;
+
+ txn_req = mgmt_txn_req_alloc(txn, req_id, MGMTD_TXN_PROC_GETCFG);
+ txn_req->req.get_data->ds_id = ds_id;
+ txn_req->req.get_data->ds_ctx = ds_ctx;
+ for (indx = 0;
+ indx < num_reqs && indx < MGMTD_MAX_NUM_DATA_REPLY_IN_BATCH;
+ indx++) {
+ MGMTD_TXN_DBG("XPath: '%s'", data_req[indx]->data->xpath);
+ txn_req->req.get_data->xpaths[indx] =
+ strdup(data_req[indx]->data->xpath);
+ txn_req->req.get_data->num_xpaths++;
+ }
+
+ mgmt_txn_register_event(txn, MGMTD_TXN_PROC_GETCFG);
+
+ return 0;
+}
+
+int mgmt_txn_send_get_data_req(uint64_t txn_id, uint64_t req_id,
+ Mgmtd__DatastoreId ds_id,
+ struct mgmt_ds_ctx *ds_ctx,
+ Mgmtd__YangGetDataReq **data_req,
+ size_t num_reqs)
+{
+ struct mgmt_txn_ctx *txn;
+ struct mgmt_txn_req *txn_req;
+ size_t indx;
+
+ txn = mgmt_txn_id2ctx(txn_id);
+ if (!txn)
+ return -1;
+
+ txn_req = mgmt_txn_req_alloc(txn, req_id, MGMTD_TXN_PROC_GETDATA);
+ txn_req->req.get_data->ds_id = ds_id;
+ txn_req->req.get_data->ds_ctx = ds_ctx;
+ for (indx = 0;
+ indx < num_reqs && indx < MGMTD_MAX_NUM_DATA_REPLY_IN_BATCH;
+ indx++) {
+ MGMTD_TXN_DBG("XPath: '%s'", data_req[indx]->data->xpath);
+ txn_req->req.get_data->xpaths[indx] =
+ strdup(data_req[indx]->data->xpath);
+ txn_req->req.get_data->num_xpaths++;
+ }
+
+ mgmt_txn_register_event(txn, MGMTD_TXN_PROC_GETDATA);
+
+ return 0;
+}
+
+void mgmt_txn_status_write(struct vty *vty)
+{
+ struct mgmt_txn_ctx *txn;
+
+ vty_out(vty, "MGMTD Transactions\n");
+
+ FOREACH_TXN_IN_LIST (mgmt_txn_mm, txn) {
+ vty_out(vty, " Txn: \t\t\t%p\n", txn);
+ vty_out(vty, " Txn-Id: \t\t\t%llu\n",
+ (unsigned long long)txn->txn_id);
+ vty_out(vty, " Session-Id: \t\t%llu\n",
+ (unsigned long long)txn->session_id);
+ vty_out(vty, " Type: \t\t\t%s\n",
+ mgmt_txn_type2str(txn->type));
+ vty_out(vty, " Ref-Count: \t\t\t%d\n", txn->refcount);
+ }
+ vty_out(vty, " Total: %d\n",
+ (int)mgmt_txns_count(&mgmt_txn_mm->txn_list));
+}
+
+int mgmt_txn_rollback_trigger_cfg_apply(struct mgmt_ds_ctx *src_ds_ctx,
+ struct mgmt_ds_ctx *dst_ds_ctx)
+{
+ static struct nb_config_cbs changes;
+ struct nb_config_cbs *cfg_chgs = NULL;
+ struct mgmt_txn_ctx *txn;
+ struct mgmt_txn_req *txn_req;
+ static struct mgmt_commit_stats dummy_stats;
+
+ memset(&changes, 0, sizeof(changes));
+ memset(&dummy_stats, 0, sizeof(dummy_stats));
+ /*
+ * This could be the case when the config is directly
+ * loaded onto the candidate DS from a file. Get the
+ * diff from a full comparison of the candidate and
+ * running DSs.
+ */
+ nb_config_diff(mgmt_ds_get_nb_config(dst_ds_ctx),
+ mgmt_ds_get_nb_config(src_ds_ctx), &changes);
+ cfg_chgs = &changes;
+
+ if (RB_EMPTY(nb_config_cbs, cfg_chgs)) {
+ /*
+ * This means there's no changes to commit whatsoever
+ * is the source of the changes in config.
+ */
+ return -1;
+ }
+
+ /*
+ * Create a CONFIG transaction to push the config changes
+ * provided to the backend client.
+ */
+ txn = mgmt_txn_create_new(0, MGMTD_TXN_TYPE_CONFIG);
+ if (!txn) {
+ MGMTD_TXN_ERR(
+ "Failed to create CONFIG Transaction for downloading CONFIGs");
+ return -1;
+ }
+
+ /*
+ * Set the changeset for transaction to commit and trigger the commit
+ * request.
+ */
+ txn_req = mgmt_txn_req_alloc(txn, 0, MGMTD_TXN_PROC_COMMITCFG);
+ txn_req->req.commit_cfg.src_ds_id = MGMTD_DS_CANDIDATE;
+ txn_req->req.commit_cfg.src_ds_ctx = src_ds_ctx;
+ txn_req->req.commit_cfg.dst_ds_id = MGMTD_DS_RUNNING;
+ txn_req->req.commit_cfg.dst_ds_ctx = dst_ds_ctx;
+ txn_req->req.commit_cfg.validate_only = false;
+ txn_req->req.commit_cfg.abort = false;
+ txn_req->req.commit_cfg.rollback = true;
+ txn_req->req.commit_cfg.cmt_stats = &dummy_stats;
+ txn_req->req.commit_cfg.cfg_chgs = cfg_chgs;
+
+ /*
+ * Trigger a COMMIT-CONFIG process.
+ */
+ mgmt_txn_register_event(txn, MGMTD_TXN_PROC_COMMITCFG);
+ return 0;
+}
projects / matthieu / frr.git / commitdiff